Caregiving Reference Library

Chronic Conditions & Body Systems Glossary

Every chronic conditions & body systems term, acronym, and concept you'll encounter in the caregiving industry — clearly defined.

130 Terms in this category
A–Z Alphabet index
A

A

2 terms

Airflow Restriction

Reduced movement of air into or out of the lungs that may cause wheezing, shortness of breath, coughing, or breathing discomfort. Respiratory conditions often worsen airflow restriction during activity.

Airway Clearance

The body’s ability to keep the breathing passages open and free from mucus, food, or secretions. Difficulty clearing the airway may increase coughing, choking, or breathing distress.

B

B

2 terms

Body Temperature

The level of heat maintained by the body during normal functioning. Unusual temperature changes may signal infection, illness, dehydration, or environmental discomfort.

Bowel Discomfort

Pain, pressure, cramping, bloating, or difficulty related to bowel movements or digestion. Ongoing bowel discomfort may affect appetite, mood, sleep, and emotional well-being.

E

E

2 terms

Exhalation

The act of breathing air out of the lungs during the normal breathing cycle. Difficulty exhaling, wheezing, or unusual breathing sounds may signal respiratory illness or distress. Caregivers should observe and report any changes in breathing pattern or effort.

Expectoration

The act of coughing up mucus or phlegm from the lungs or airways. Changes in mucus color, thickness, odor, or amount may signal infection or respiratory illness. Persistent or worsening expectoration should always be observed carefully and reported promptly.

F

F

5 terms

Fibrosis

Thickening or scarring of body tissue that may reduce normal movement or organ function over time. Fibrosis may affect breathing, flexibility, circulation, or physical comfort depending on the area involved. Chronic illness or inflammation may contribute to fibrosis development.

Fracture

A broken bone caused by falls, injury, osteoporosis, or physical trauma. Fractures may cause pain, swelling, bruising, deformity, or difficulty moving safely. Older adults with fragile bones are at higher risk for serious fractures after falls.

Fragility

Increased physical vulnerability that makes a person more susceptible to bruising, skin tears, fractures, illness, or injury. Fragile clients require slow movement, gentle handling, and extra protection during transfers and personal care. Even minor accidents can cause significant harm in clients with high fragility.

Frailty

Physical weakness and reduced body strength that make a person more vulnerable to falls, injury, illness, or slower recovery. Frail clients may tire easily and require additional support with mobility and daily activities. Gentle handling and safety awareness are especially important.

Freezing

A sudden inability to move or continue walking, often seen in neurological conditions such as Parkinson’s disease. Clients may feel as though their feet are “stuck” to the floor.

G

G

1 terms

Glucose Awareness

Understanding signs of high or low blood sugar such as sweating, shakiness, confusion, irritability, or weakness. Sudden glucose-related symptoms should be reported immediately.

J

J

3 terms

Jaw Clenching

Tight tightening of the jaw muscles that may occur because of pain, stress, anxiety, or neurological conditions. Persistent jaw clenching may cause headaches or facial discomfort.

Jaw Stiffness

Tightness or reduced movement in the jaw that may affect chewing, speaking, swallowing, or oral care. Jaw stiffness may occur with arthritis, neurological conditions, or dental problems.

Jaw Tremor

Shaking or trembling movements involving the jaw or mouth area, often associated with neurological conditions such as Parkinson’s disease. Tremors may affect eating or speaking comfort.

K

K

1 terms

Kinetic Tremor

Shaking or trembling that occurs during movement rather than while resting. Kinetic tremors may affect eating, writing, dressing, or safe handling of objects.

M

M

7 terms

Microvascular Damage

Damage to very small blood vessels, often linked to diabetes or circulation disorders. Microvascular damage may affect the eyes, kidneys, nerves, or wound healing ability. Reduced circulation in small vessels may slow recovery from injuries or infections.

Mouth Ulcers

Painful sores or irritated areas inside the mouth that may make eating, drinking, or speaking uncomfortable. Mouth ulcers may occur because of illness, dentures, medications, or nutritional deficiencies.

Mucus Plugging

Thick mucus blocking part of the airway and making breathing difficult. Clients may cough repeatedly, struggle to breathe, or make unusual breathing sounds. Severe airway blockage may require urgent medical attention.

Mucus Production Increase

Excess mucus buildup in the nose, throat, or lungs that may cause coughing, congestion, throat clearing, or breathing discomfort. Increased mucus may occur with infection, allergies, or chronic respiratory illness.

Multimorbidity

The presence of multiple chronic health conditions in the same client at the same time. Managing several illnesses together may increase medication complexity, fatigue, mobility issues, or care coordination needs. Clients with multimorbidity often require closely monitored, individualized care routines.

Muscle Spasm

Sudden, involuntary tightening or cramping of a muscle that may cause pain or restricted movement. Muscle spasms may occur because of dehydration, nerve irritation, fatigue, or medical conditions. Severe spasms may interfere with sleep, mobility, or daily comfort.

Myoclonus

Sudden, brief, involuntary muscle jerks or twitching movements. Myoclonus may occur because of neurological disorders, medications, infections, or metabolic problems. Frequent or severe twitching should be medically evaluated. Sudden worsening movements may interfere with sleep, eating, or safety.

N

N

15 terms

Nasal Cannula

A lightweight oxygen delivery device with small prongs placed in the nostrils to provide supplemental oxygen. Caregivers should observe for skin irritation, comfort, and safe tubing placement. Proper oxygen flow and tubing safety are important for effective breathing support.

Nasal Congestion

Blockage or stuffiness in the nose caused by mucus buildup, allergies, infection, or inflammation. Nasal congestion may interfere with breathing, sleep, appetite, or comfort. Severe congestion may also affect oxygen intake and energy levels.

Nasolacrimal Drainage

Drainage of tears from the eyes through small passages into the nose. Blockage of this system may cause watery eyes, irritation, or infection risk.

Neoplastic Disease

Disease involving abnormal or uncontrolled cell growth, including benign or cancerous tumors. Symptoms and care needs may vary widely depending on the affected body system.

Nephropathy

Kidney damage or disease that affects the kidneys’ ability to filter waste and maintain fluid balance. Diabetes and high blood pressure are common causes of nephropathy. Symptoms may include swelling, fatigue, or changes in urination patterns.

Neurofatigue

Extreme mental or physical exhaustion caused by neurological conditions such as stroke, Parkinson’s disease, or brain injury. Clients may tire quickly during conversation, walking, or simple daily activities. Frequent rest periods may help reduce overwhelm and frustration.

Neurogenic Bladder

Loss of normal bladder control caused by nerve damage or neurological conditions. Clients may experience retention, leakage, frequent urination, or increased infection risk. Caregivers should monitor urinary patterns and comfort closely.

Neurogenic Pain

Pain caused by injury or dysfunction within the nervous system rather than direct physical injury to muscles or joints. Clients may describe burning, electric, or shooting sensations.

Neuroinflammation

Inflammation affecting the brain or nervous system that may contribute to confusion, weakness, cognitive changes, or neurological symptoms.

Neurological Fatigue

Physical and mental exhaustion related to neurological illness or nervous system disorders. Clients may appear slower, less alert, or overwhelmed after minimal activity.

Neuromuscular Weakness

Weakness caused by problems involving the nerves and muscles working together. It may affect walking, swallowing, speaking, breathing, or daily activities. Progressive weakness may increase dependence on caregivers over time.

Neuropathic Pain

Burning, shooting, stabbing, or tingling pain caused by nerve damage or nervous system disorders. This type of pain may interfere with sleep, walking, or daily comfort.

Nociceptive Pain

Pain caused by actual tissue injury such as cuts, inflammation, burns, arthritis, or physical trauma. This is the body’s normal response to harmful stimulation or damage.

Nonproductive Cough

A dry cough that does not produce mucus or phlegm. It may occur with infections, allergies, medication side effects, or respiratory irritation. Persistent coughing may interfere with sleep, breathing comfort, or daily activities.

Nystagmus

Repetitive, uncontrolled eye movements that may affect balance, coordination, focus, or vision. Nystagmus may occur with neurological or inner ear conditions. Clients may also experience dizziness or trouble maintaining visual focus.

O

O

13 terms

Obstructive Breathing

Difficulty breathing caused by blockage or narrowing in the airways. Clients may wheeze, gasp, cough frequently, or appear short of breath during activity or rest. Severe breathing obstruction can quickly become a medical emergency if oxygen levels continue to drop.

Ocular Dryness

Dry, irritated eyes caused by reduced tear production, medication effects, aging, or environmental conditions. Symptoms may include redness, burning, blurry vision, or sensitivity to light. Ongoing dryness may increase discomfort and the risk of eye irritation or infection.

Ocular Migraine

A migraine condition that affects vision and may cause flashing lights, blind spots, blurry vision, or temporary visual disturbances. Symptoms usually resolve but may feel alarming. Some clients may also experience headache, dizziness, or sensitivity to light afterward.

Oral Lesions

Sores, ulcers, white patches, or damaged areas inside the mouth that may cause pain, irritation, bleeding, or difficulty eating and swallowing. Oral lesions may result from infection, irritation, illness, or medication effects.

Oral Motor Weakness

Weakness in the muscles of the mouth or face that may affect chewing, speaking, swallowing, or facial expressions. Clients may cough during meals or struggle to control food in the mouth. Oral motor weakness may increase choking or aspiration risk during eating and drinking.

Orbital Cellulitis

A serious infection around the eye that may cause swelling, redness, pain, fever, or vision problems. Without treatment, the infection can spread and become dangerous. Immediate medical evaluation is important to protect vision and overall health.

Organ Failure

Severe loss of function in a major organ such as the heart, lungs, kidneys, or liver. Organ failure can become life-threatening and often requires ongoing medical treatment and monitoring. Symptoms may include weakness, confusion, swelling, breathing difficulty, or reduced body function.

Osteoarthritis

A degenerative joint disease caused by cartilage breakdown that leads to pain, stiffness, swelling, and reduced movement in the joints.

Osteopenia

Lower-than-normal bone density that increases the risk of fractures and may develop before osteoporosis. Clients with osteopenia should be protected from falls and injuries. Weight-bearing activity and proper nutrition may help slow further bone loss.

Osteoporosis

A condition that weakens bones and increases the risk of fractures, especially in older adults. Even minor falls or bumps may cause serious injury.

Overactive Bladder

A condition causing sudden urges to urinate, frequent bathroom trips, or urinary leakage. Symptoms may disrupt sleep, daily routines, and emotional comfort. Some clients may avoid fluids because of fear of accidents, increasing dehydration risk.

Oxygen Dependency

A condition where a client regularly requires oxygen therapy to maintain safe breathing and oxygen levels. Caregivers should observe tubing, comfort, and breathing changes carefully.

Oxygen Saturation

The percentage of oxygen being carried in the blood. Low oxygen saturation levels may cause confusion, blue lips, weakness, or breathing difficulty.

P

P

33 terms

Palpitations

A feeling that the heart is racing, pounding, fluttering, or beating irregularly. Palpitations may occur with stress, heart conditions, medications, dehydration, or illness and should be monitored if persistent.

Pancreatitis

Inflammation of the pancreas that may cause severe abdominal pain, nausea, vomiting, fever, or digestive problems. Symptoms can become serious quickly and may require hospitalization or ongoing medical care.

Paresis

Partial muscle weakness or limited movement in a body part caused by nerve or muscle damage. It may affect walking, grip strength, coordination, or the ability to perform daily activities safely.

Paronychia

An infection around the fingernail or toenail that may cause redness, swelling, tenderness, or pus formation.

Pathological Fracture

A bone fracture caused by weakened bones from disease rather than major injury. Conditions like osteoporosis or cancer may increase fracture risk.

Percussion Therapy

A treatment technique involving rhythmic tapping on the chest or body to help loosen mucus or improve circulation. It is sometimes used to support clients with respiratory conditions or limited mobility.

Pericarditis

Inflammation of the protective sac surrounding the heart, which may cause chest pain, fever, fatigue, or breathing discomfort. Symptoms may worsen when lying down or taking deep breaths.

Periorbital Edema

Swelling around the eyes that may occur because of allergies, infection, kidney problems, injury, or fluid retention. The swelling may affect comfort, appearance, or vision temporarily.

Peripheral Neuropathy

Damage to nerves outside the brain and spinal cord that may cause numbness, weakness, pain, or reduced sensation in the hands or feet. It is common in diabetes and neurological disorders.

Phlebitis

Inflammation of a vein that may cause redness, warmth, swelling, tenderness, or pain along the affected area. It may develop after injury, infection, or prolonged inactivity.

Phlegm Retention

Excess mucus that remains trapped in the airways or lungs, making coughing and breathing more difficult. Thick mucus buildup may increase the risk of infection or breathing complications.

Phonophobia

Extreme sensitivity to sound that may cause discomfort, anxiety, headaches, or the need to avoid noisy environments.

Photophobia

Extreme sensitivity to light that may cause discomfort, headaches, eye pain, or the need to avoid bright environments. It can occur with migraines, infections, or neurological conditions.

Plantar Fasciitis

Inflammation of the tissue along the bottom of the foot, causing heel pain and discomfort during walking or standing. Pain is often worse after resting or first getting out of bed.

Pleural Effusion

Fluid buildup around the lungs that may cause chest discomfort, coughing, or breathing difficulty. Large fluid buildup can make it harder for the lungs to expand normally.

Pleurisy

Inflammation of the lining around the lungs that causes sharp chest pain, especially during breathing, coughing, or movement. It may occur with infections or respiratory conditions.

Pneumonia

A lung infection that causes inflammation and fluid buildup in the air sacs of the lungs. Symptoms may include fever, coughing, weakness, confusion, and breathing difficulty.

Pneumothorax

A collapsed lung caused by air leaking into the space around the lung. Symptoms may include sudden chest pain, breathing difficulty, rapid breathing, or reduced oxygen levels.

Polyneuropathy

Damage affecting multiple peripheral nerves, often causing widespread numbness, tingling, weakness, or burning pain in the limbs.

Presbyopia

Age-related difficulty focusing on nearby objects, often making reading or close-up tasks harder over time. Many older adults require reading glasses or stronger visual support.

Presyncope

A feeling of almost fainting that may include dizziness, weakness, sweating, blurred vision, or lightheadedness without complete loss of consciousness.

Prolapse

A condition where an organ slips out of its normal position, often affecting pelvic organs such as the bladder, uterus, or rectum.

Proteinuria

The presence of excess protein in the urine, often linked to kidney disease or kidney damage. It may be detected during medical testing before symptoms become severe.

Pseudobulbar Affect

Sudden, uncontrollable episodes of laughing or crying that do not match the person’s actual emotions. It is often linked to neurological disorders or brain injury.

Ptialism

Excessive saliva production that may lead to drooling, swallowing difficulty, or skin irritation around the mouth.

Ptosis

Drooping of the upper eyelid that may affect vision and can be linked to neurological conditions, muscle weakness, aging, or nerve damage.

Pulmonary Crackles

Crackling sounds heard in the lungs during breathing, often caused by fluid buildup, infection, or lung disease.

Pulmonary Edema

Fluid buildup in the lungs that causes severe breathing difficulty, coughing, wheezing, or shortness of breath. This condition can become life-threatening without prompt medical care.

Pulmonary Embolism

A blockage in a lung artery, usually caused by a blood clot traveling from another part of the body. Symptoms may include sudden chest pain, rapid breathing, or severe shortness of breath.

Pulmonary Hypertension

High blood pressure in the arteries of the lungs that can strain the heart and cause fatigue, chest pain, dizziness, or breathing difficulty.

Pulse Deficit

A difference between the heartbeat heard through the chest and the pulse felt at the wrist. It may suggest an irregular heart rhythm or circulation problem and should be medically evaluated if persistent.

Pyrexia

The medical term for fever, usually caused by infection, inflammation, or illness. Fever may also appear with chills, sweating, weakness, or confusion.

Pyuria

The presence of pus or white blood cells in the urine, often signaling urinary tract infection or inflammation.

Q

Q

4 terms

QT Syndrome

A heart rhythm disorder involving abnormal electrical activity in the heart. It may increase the risk of fainting, irregular heartbeat, or sudden cardiac complications.

Quadrantanopia

Loss of vision in one quarter of the visual field caused by brain injury, stroke, or neurological damage. Clients may bump into objects or struggle with navigation and safety awareness.

Quadriparesis

Weakness affecting all four limbs caused by neurological disorders, spinal cord conditions, stroke, or illness. Unlike paralysis, some movement is still present but strength is greatly reduced.

Quota Breathing

Abnormally shallow or restricted breathing that limits normal oxygen intake. Clients may appear tired, short of breath, or unable to take deep breaths comfortably.

R

R

13 terms

Radiculopathy

Pain, numbness, tingling, or weakness caused by pressure or irritation of a spinal nerve. Symptoms may travel down the arms or legs and can interfere with movement, balance, or daily activities.

Rales

Abnormal crackling or bubbling sounds heard in the lungs during breathing, often caused by fluid buildup, pneumonia, or respiratory illness. These sounds may indicate breathing problems that require medical evaluation.

Raynaud’s Phenomenon

A circulation disorder that temporarily reduces blood flow to the fingers or toes, usually triggered by cold temperatures or stress. Affected areas may become pale, blue, numb, or painful.

Reflux

A digestive condition in which stomach acid flows backward into the esophagus, causing heartburn, throat irritation, coughing, or discomfort after eating or lying down.

Renal Failure

A serious condition in which the kidneys stop filtering waste and excess fluid from the blood effectively. Symptoms may include swelling, fatigue, nausea, confusion, and reduced urine output.

Renal Insufficiency

Reduced kidney function that limits the kidneys’ ability to filter waste products and maintain proper fluid and electrolyte balance in the body.

Respiratory Acidosis

A condition caused by inadequate breathing that results in excessive carbon dioxide buildup in the blood, which may lead to confusion, drowsiness, or breathing difficulty.

Respiratory Congestion

Buildup of mucus or fluid in the lungs or airways that may cause coughing, wheezing, rattling sounds, or breathing difficulty. Congestion may occur with infections, heart conditions, or chronic lung disease.

Resting Tremor

Involuntary shaking that occurs when muscles are relaxed and not actively moving. Resting tremors are commonly associated with Parkinson’s disease and may affect eating, writing, or dressing.

Restless Leg Syndrome

A neurological condition causing uncomfortable sensations in the legs and a strong urge to move them, especially during rest or at night. It may interfere with sleep and increase fatigue.

Retention

The inability to fully empty the bladder or bowels, often causing pressure, bloating, discomfort, or frequent urges. Urinary or bowel retention may increase the risk of infection or other complications.

Retinopathy

Damage to the retina of the eye, commonly caused by diabetes or high blood pressure. It may lead to blurry vision, dark spots, difficulty seeing clearly, or gradual vision loss if untreated.

Rheumatoid Arthritis

A chronic autoimmune disease that causes inflammation, pain, swelling, and stiffness in the joints, especially in the hands, wrists, knees, and feet. Over time, it may affect mobility, grip strength, and the ability to complete daily tasks independently.

S

S

6 terms

Sialorrhea

Excessive saliva production or drooling that may lead to skin irritation, choking risk, or discomfort. It is common in some neurological conditions.

Sleep Apnea

A sleep disorder in which breathing repeatedly stops and restarts during sleep. It may cause loud snoring, daytime fatigue, headaches, or morning confusion.

Spasticity

Abnormal muscle tightness or stiffness caused by damage to the brain or nervous system. It can make movement painful, limit flexibility, and interfere with walking, dressing, or daily activities.

Stenosis

Narrowing of a body passage, such as the spinal canal or blood vessels, which may reduce normal function. Symptoms can include pain, weakness, numbness, tingling, or movement difficulties.

Stridor

A harsh, high-pitched breathing sound caused by narrowing or blockage of the airway. It may signal serious breathing difficulty and requires immediate medical attention.

Suprapubic Catheter

A urinary catheter inserted through the lower abdomen directly into the bladder to drain urine. Caregivers may help observe drainage, comfort, and signs of infection around the site.

T

T

12 terms

Tachycardia

An abnormally fast heart rate that may cause dizziness, weakness, chest discomfort, or shortness of breath.

Temperature Dysregulation

Difficulty maintaining normal body temperature, causing a client to become too hot or too cold more easily than expected.

Tendonitis

Inflammation of a tendon that may cause pain, swelling, or reduced movement around joints.

Thoracic Pain

Pain located in the upper or middle back or chest area that may affect breathing, movement, or comfort.

Thrombosis

A blood clot forming inside a blood vessel, which may reduce circulation and become life-threatening if untreated.

Tinnitus

Ringing, buzzing, or other noises heard in the ears without an outside sound source. It may affect concentration, sleep, or emotional comfort.

Tourette Syndrome

A neurological condition involving involuntary movements or vocal sounds called tics. Symptoms vary widely between individuals.

Tracheostomy

A surgically created opening in the neck used to help with breathing. Caregivers may support comfort and observation but only perform care tasks within training and scope.

Tremors

Involuntary shaking movements often affecting the hands, arms, or head. Tremors may interfere with eating, dressing, writing, or mobility.

Trigeminal Neuralgia

A nerve condition causing sudden, severe facial pain that may be triggered by chewing, talking, or touch.

Type 1 Diabetes

A chronic condition where the body cannot produce insulin. Clients may require insulin management, meal monitoring, and observation for blood sugar emergencies.

Type 2 Diabetes

A condition where the body cannot properly use insulin, leading to high blood sugar levels. Caregivers may observe fatigue, thirst, slow healing, or dietary concerns.

U

U

10 terms

Ulnar Drift

A hand deformity often seen in rheumatoid arthritis where fingers shift sideways, affecting grip and hand function.

Umbilical Hernia

A bulge near the belly button caused by tissue pushing through weakened muscle. Caregivers should report pain, redness, or sudden swelling changes.

Unilateral Weakness

Weakness affecting only one side of the body, commonly seen after strokes or neurological conditions.

Uremia

A serious condition caused by waste buildup in the blood when the kidneys are not working properly. Clients may appear confused, weak, nauseated, or unusually tired.

Uremic Confusion

Mental confusion caused by toxin buildup related to kidney problems. Clients may appear unusually forgetful, sleepy, or disoriented.

Urethral Irritation

Discomfort, burning, or inflammation around the urinary opening that may cause pain during urination.

Uric Acid Buildup

Excess uric acid in the body that may contribute to gout, joint pain, swelling, or kidney issues.

Urinary Frequency

Needing to urinate more often than usual, which may be linked to infection, medications, diabetes, or hydration changes.

Utensil Adaptation Support

Some clients struggle with standard forks, spoons, or cups because of tremors, weakness, arthritis, or stroke effects. Adaptive utensils can improve independence and reduce frustration during meals.

Uvula Swelling

Enlargement of the small tissue at the back of the throat that may affect swallowing, breathing, or speech.

X

X

1 terms

X-Linked Condition Awareness

Some inherited medical conditions are described as X-linked, meaning they are connected to genes carried on the X chromosome. Caregivers may encounter this term in care plans or family discussions and should focus on understanding the client’s support needs rather than the genetics itself.