Gastrointestinal⭐⭐⭐ Very Common
Indigestion
/in-dih-JES-chuhn/Simple Meaning:
Discomfort or burning in the upper stomach after eating.
Dyspeptic complex including postprandial fullness, early satiety, epigastric pain, and belching.
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 "I")Reset Filters
General Medical⭐⭐⭐ Very Common
Infection
/in-FEK-shuhn/Simple Meaning:
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.
General Medical⭐⭐⭐ Very Common
Inflammation
/in-fluh-MAY-shuhn/Simple Meaning:
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.
Neurological⭐⭐⭐ Very Common
Insomnia
/in-SOM-nee-uh/Simple Meaning:
Difficulty falling asleep or staying asleep.
Sleep disorder characterized by dissatisfaction with sleep quality or duration despite adequate opportunity for sleep.
Dermatological⭐⭐⭐ Very Common
Itching
/ICH-ing/Simple Meaning:
Uncomfortable skin sensation creating an urge to scratch.
Pruritus mediated by unmyelinated C-nerve fibers in response to histamine, serotonin, or bile salts.
General Medical⭐⭐ Common
Irritation
/ir-ih-TAY-shuhn/Simple Meaning:
Discomfort caused by inflammation or physical exposure.
Localized superficial inflammatory tissue reaction caused by mechanical friction, chemical agents, or thermal injury.
This information is educational only and does not replace professional medical advice.