Neurological⭐⭐⭐ Very Common
Headache
/HED-ayk/Simple Meaning:
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).
Clinical & Layman Language Dictionary (Deduplicated A–Z)
Medical Terms & Simple Meanings A–Z
Search over 153+ verified medical terms. Clear layman definitions, clinical explanations, frequency ratings (⭐⭐⭐ Very Common), pronunciations, and body system tags.
Showing 6 Medical Terms (Letter "H")Reset Filters
Gastrointestinal⭐⭐⭐ Very Common
Heartburn
/HART-burn/Simple Meaning:
Burning pain behind the breastbone caused by stomach acid.
Substernal burning sensation caused by gastroesophageal reflux of acidic gastric juice irritating esophageal mucosa.
Cardiovascular⭐⭐⭐ Very Common
Heart Rate
/hart rayt/Simple Meaning:
Number of heartbeats per minute.
Frequency of cardiac ventricular contractions per minute (standard normal adult resting rate: 60–100 BPM).
Cardiovascular⭐⭐⭐ Very Common
Hypertension
/hye-per-TEN-shuhn/Simple Meaning:
Persistently high blood pressure (≥ 130/80 mmHg).
Chronic elevation of systemic arterial pressure exceeding established clinical guidelines, increasing stroke and heart attack risk.
Cardiovascular⭐⭐⭐ Very Common
Hypotension
/hye-poh-TEN-shuhn/Simple Meaning:
Abnormally low blood pressure (< 90/60 mmHg).
Subnormal arterial blood pressure resulting in inadequate organ perfusion and symptoms of lightheadedness or presyncope.
Dermatological⭐⭐⭐ Very Common
Hives
/hyvz/Simple Meaning:
Itchy, raised red or skin-colored welts (Urticaria).
Pruritic erythematous cutaneous plaques caused by localized dermal edema following mast cell histamine release.
This information is educational only and does not replace professional medical advice.