Search over 153+ verified medical terms. Clear layman definitions, clinical explanations, frequency ratings (⭐⭐⭐ Very Common), pronunciations, and body system tags.
A medicine used to relieve or reduce pain (e.g. Paracetamol, Ibuprofen).
Analgesics act on peripheral or central nervous systems to relieve pain without causing loss of consciousness.
Pain felt in the belly or abdominal cavity.
Discomfort occurring between the chest and pelvic region, originating from organs such as the stomach, intestines, liver, or gallbladder.
Sudden in onset or usually short-term.
Refers to a disease or symptom that develops rapidly and requires prompt evaluation, as opposed to chronic conditions.
A condition involving low red blood cells or hemoglobin levels.
Reduced oxygen-carrying capacity of blood caused by iron deficiency, vitamin B12 loss, or blood loss, causing fatigue and pallor.
Excessive worry, fear, or nervousness.
A psychological and physiological state characterized by persistent apprehension, somatic tension, and autonomic arousal.
Desire to eat food.
The physiological and psychological drive to consume food, regulated by the hypothalamus and gastrointestinal hormones.
Abnormal or irregular heart rhythm.
Disruption in the electrical conduction system of the heart, causing beat rates that are too fast (tachycardia), too slow (bradycardia), or irregular.
Severe, life-threatening allergic reaction.
Rapid-onset systemic IgE-mediated allergic hypersensitivity reaction causing airway edema, bronchospasm, and circulatory collapse.
Pain or soreness affecting the spine or back muscles.
Discomfort originating from spinal vertebrae, intervertebral discs, ligaments, or paraspinal musculature.
Release of swallowed gas or air from the stomach.
Retrograde expulsion of swallowed air (aerophagia) from the stomach through the esophagus (Eructation).
Fluid-filled pocket under the top skin layer.
Vesicle or bulla containing serum, plasma, or pus formed between skin epidermal layers in response to friction or burn.
Uncomfortable fullness or swelling in the belly.
Subjective feeling of abdominal tightness often associated with intestinal gas accumulation or delayed gastric emptying.
Reduced visual sharpness or clarity.
Decrease in visual acuity preventing clear focus, caused by refractive errors, cataracts, glaucoma, or retinopathy.
Skin discoloration caused by micro-bleeding under skin.
Contusion resulting from blunt force extravasation of red blood cells into subcutaneous tissue.
Feeling cold, often accompanied by shivering.
Involuntary muscle contractions generating heat in response to pyrogen-induced hypothalamic temperature set-point elevation.
Persistent or long-lasting medical condition.
Illness persisting for longer than 3 months, requiring ongoing medical management (e.g. Hypertension, Diabetes).
Pain or discomfort in the chest area.
High-acuity clinical symptom originating from cardiac ischemia, pericarditis, aortic dissection, pulmonary embolism, or esophageal spasm.
Feeling of pressure or constriction across the chest.
Sensation of heaviness associated with bronchospasm in asthma, acute myocardial ischemia, or panic anxiety attacks.
Difficulty thinking clearly or understanding.
Impaired cognitive processing characterized by disorientation, poor memory recall, and inability to maintain coherent thought.
Blockage or fullness caused by mucus or swollen blood vessels.
Hyperemia and excessive fluid secretion in mucosal membranes of upper or lower respiratory tracts.
Infrequent or difficult bowel movements.
Gastrointestinal symptom characterized by fewer than 3 bowel movements per week, hard dry stools, and straining.
Forceful expulsion of air from the lungs.
Protective reflex clearing respiratory airways of secretions, irritants, foreign particles, and microbes.
Bluish discoloration of skin or lips.
Clinical sign indicating dark desaturated hemoglobin (> 5 g/dL) in cutaneous blood capillaries due to severe hypoxia.
Too little fluid or water in the body.
Negative fluid balance leading to cellular extracellular volume depletion, hypernatremia, reduced skin turgor, and dry mucous membranes.
Frequent loose or watery bowel movements.
Passage of 3 or more loose or watery stools daily, caused by gastroenteritis, secretory toxins, or malabsorption.
Feeling unsteady, lightheaded, or faint.
Nonspecific sensation of impaired spatial orientation, faintness, or presyncope.
Unusual sleepiness or inclination to sleep.
State of somnolence or impaired wakefulness due to sedative medications, sleep deprivation, or central metabolic disorders.
Medical term for difficult or uncomfortable breathing.
Subjective experience of breathing discomfort consisting of qualitatively distinct sensations of air hunger and chest tightness.
Swelling caused by excess fluid in body tissues.
Palpable swelling produced by expansion of interstitial fluid volume in dependent limbs or sacral areas (Pitting vs Non-pitting edema).
Medical term for skin redness.
Redness of the skin resulting from hyperemic vasodilation of superficial capillaries during inflammation or skin injury.
Unusual tiredness or persistent lack of energy.
Subjective complaint of tiredness, weakness, and exhaustion distinct from normal sleepiness, persisting despite rest.
Higher-than-normal body temperature (≥ 100.4°F / 38°C).
Hypothalamic set-point elevation mediated by pyrogenic cytokines (IL-1, TNF-alpha) in response to infection or inflammation.
Relating to the stomach and intestines.
Pertaining to the organ system responsible for food ingestion, digestion, nutrient absorption, and waste excretion.
Pain or discomfort in the head or upper neck.
Cephalgia arising from pain-sensitive cranial structures (dura, intracranial blood vessels, scalp muscles, or trigeminal nerve).
Burning pain behind the breastbone caused by stomach acid.
Substernal burning sensation caused by gastroesophageal reflux of acidic gastric juice irritating esophageal mucosa.
Number of heartbeats per minute.
Frequency of cardiac ventricular contractions per minute (standard normal adult resting rate: 60–100 BPM).
Persistently high blood pressure (≥ 130/80 mmHg).
Chronic elevation of systemic arterial pressure exceeding established clinical guidelines, increasing stroke and heart attack risk.
Abnormally low blood pressure (< 90/60 mmHg).
Subnormal arterial blood pressure resulting in inadequate organ perfusion and symptoms of lightheadedness or presyncope.
Itchy, raised red or skin-colored welts (Urticaria).
Pruritic erythematous cutaneous plaques caused by localized dermal edema following mast cell histamine release.
Discomfort or burning in the upper stomach after eating.
Dyspeptic complex including postprandial fullness, early satiety, epigastric pain, and belching.
Invasion and growth of harmful germs in the body.
Pathological state resulting from invasion, colonization, and tissue injury caused by pathogenic bacteria, viruses, fungi, or parasites.
Body response causing redness, warmth, swelling, and pain.
Vascular and cellular immune cascade delivering leukocytes and plasma proteins to sites of infection or tissue trauma.
Difficulty falling asleep or staying asleep.
Sleep disorder characterized by dissatisfaction with sleep quality or duration despite adequate opportunity for sleep.
Uncomfortable skin sensation creating an urge to scratch.
Pruritus mediated by unmyelinated C-nerve fibers in response to histamine, serotonin, or bile salts.
Yellowing of the skin and whites of the eyes.
Cutaneous and scleral yellow icterus resulting from elevated plasma total bilirubin levels (> 2.5 mg/dL).
Noticeable mass, bump, or swelling under skin.
Palpable localized tissue enlargement requiring diagnostic evaluation to differentiate cyst, lipoma, lymph node, or tumor.
General feeling of being unwell, weak, or sick.
Non-specific systemic symptom of feeling unwell, often heralding the onset of viral or bacterial infection.
Recurrent severe headache attacks often with nausea.
Neurovascular headache disorder characterized by unilateral pulsating pain, photophobia, phonophobia, and nausea.
Slippery protective liquid produced by mucous membranes.
Viscous secretion containing mucins, immunoglobulins, and salts lining respiratory and gastrointestinal tracts.
Pain or aching in muscles (Myalgia).
Musculoskeletal discomfort caused by strain, viral infection, electrolyte imbalance, or inflammatory myopathy.
Blocked or stuffy nose.
Swelling of nasal vascular membranes and mucus hypersecretion obstructing upper nasal airway airflow.
Feeling that you are going to vomit.
Subjective urge to vomit mediated by the chemoreceptor trigger zone (CTZ) and gastrointestinal vagal afferents.
Pain or stiffness in the neck region.
Cervical spine discomfort involving paraspinal muscles, nerve roots, or intervertebral discs.
Pain caused by nerve damage or nerve dysfunction.
Chronic burning, shooting, or electric pain arising from primary lesion or disease of somatosensory nervous system.
Reduced or absent skin sensation.
Loss of cutaneous tactile or pain sensation resulting from peripheral neuropathy or spinal nerve root compression.
Percentage of hemoglobin carrying oxygen (SpO2).
Vital sign indicating arterial blood oxygen content measured non-invasively by pulse oximetry (normal range: 95–100%).
Unpleasant physical sensation signalling tissue injury.
Complex sensory experience mediated by nociceptors in response to actual or potential tissue damage.
Uncomfortable awareness of one's heartbeat.
Sensation of rapid, thumping, fluttery, or skipped heartbeats reported during arrhythmia or anxiety.
Unusual paleness of the skin.
Paleness of skin and mucosal membranes caused by reduced cutaneous blood flow or low red blood cell count in anemia.
Thick mucus coughed up from airways.
Mucopurulent bronchial secretion expectorated during respiratory tract infections.
Abnormal change in skin color, appearance, or texture.
Widespread eruption of skin lesions including macules, papules, or vesicles.
Significant difficulty or struggle to breathe.
High-acuity state of respiratory failure characterized by tachypnea, intercostal retractions, cyanosis, and nasal flaring.
Excess fluid or thin mucus coming from nostrils.
Watery nasal discharge resulting from viral inflammation or allergic rhinitis.
Sudden, uncontrolled electrical activity in the brain.
Transient neurological signs resulting from abnormal excessive paroxysmal neuronal discharges in cerebral cortex.
Difficulty or discomfort breathing (Dyspnea).
Subjective feeling of inadequate air intake requiring conscious respiratory effort.
Pain, scratchiness, or irritation in the throat.
Pharyngeal discomfort triggered by viral upper respiratory tract infection or bacterial tonsillitis.
Pain or discomfort, often following activity.
Localized muscular stiffness or tenderness resulting from physical exertion or micro-trauma.
Mucus or phlegm coughed up from lower airways.
Expectorated matter containing bronchial mucus, cellular debris, and microorganisms.
Difficulty moving a joint or muscle normally.
Reduced joint range of motion and tissue resistance, common in morning osteoarthritis.
Enlargement caused by fluid accumulation or tissue inflammation.
Visible or palpable volume expansion of body tissue caused by edema or localized inflammatory response.
Abnormally fast heart rate (> 100 beats/min).
Accelerated cardiac ventricular rate originating from sinus node elevation, supraventricular focus, or ventricular focus.
Pain or discomfort when an area is touched or pressed.
Objective physical examination finding where manual palpation of tissue elicits pain.
Prickling "pins and needles" sensation.
Abnormal cutaneous paresthesia indicating nerve irritation or transient focal nerve compression.
Hearing ringing or buzzing sounds without external noise.
Auditory perception of ringing, buzzing, or hissing sound in the absence of corresponding external acoustic stimulus.
Involuntary, rhythmic shaking of body parts.
Involuntary oscillatory movement produced by alternating contractions of antagonistic muscle groups.
False sensation that you or your surroundings are spinning.
Illusion of rotational movement caused by asymmetric dysfunction in peripheral vestibular apparatus or central connections.
Forceful emptying of stomach contents through the mouth.
Coordinated gastrointestinal and respiratory emetic reflex purging stomach contents via oral cavity.
High-pitched whistling sound during breathing.
Continuous high-pitched musical adventitious sound generated by subtotal airway obstruction during expiration.
Reduced physical muscular strength.
Decrease in maximum force produced by one or more muscle groups during physical exertion.
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