MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
About MedicalVocabulary.org
The most complete online medical dictionary: 16,436 terms covering anatomy, physiology, pathologies, diagnostic exams, pharmacology and every clinical specialty.
Designed for 3 kinds of users:
- Patients and family who want to understand a diagnosis, a medical report or instructions from a doctor.
- Students of medicine, nursing, physiotherapy and the health professions, dealing with technical terminology.
- Doctors, pharmacists and healthcare workers who need a quick and reliable reference.
Definitions are written in clear, accessible language while keeping the rigor required for professional use. Each term has a dedicated URL, instant autocomplete search, and can be shared on WhatsApp, Facebook, X and via email with one click.
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Disclaimer: the content is for informational and educational purposes only and does not replace medical advice. If you have doubts about your health, always consult a qualified professional. In case of emergency call your local emergency number (911 in the US, 112 in the EU).
Headache, thunderclap
A sudden and excruciatingly painful headache. Some doctors feel that in the absence of a known headache disorder, such as migraines, a thunderclap headache may sometimes signal a ruptured aneurysm in the brain. See your physician…
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Show more- Osteogenesis imperfecta Brittle bone disease. Osteogenesis imperfecta (OI) is not one but a group of genetic diseases, all of which…
- Asthma G=4 cel ODYvAlign=top bgColor=#cccccc colSpan=2> vAlign=top width='100%' bgColor=#ffffff>Our Asthma Main…
- Syringoma A benign (non-cancerous) skin tumor that derives from eccrine cells, specialized cells that are related to…
- PID (pelvic inflammatory disease) Despite its seeming lack of gender, this term is applied to women only. PID refers exclusively to ascending…
- Stiff baby syndrome A genetic disorder also known as hyperexplexia in which babies have an exaggerated startle reflex (reaction)…
- Strait-jacket See: Straitjacket
- Encephalitis, LAC LaCrosse encephalitis, one of the main types of encephalitis caused by an arbovirus in the US. An arbovirus…
- Sleep, REM Sleep, REM: REM sleep is the portion of sleep when there are rapid eye movements (REMs). Dreams occur during…
- Arch, aortic See: Aortic arch
- Vernix More formally known as vernix caseosa, the vernix is a white cheesy substance that covers and protects the…
- Plague, black In the 14th century the victims of the 'black plague' had bleeding below the skin (subcutaneous hemorrhage)…
- Breast infection Infection of breast tissue usually caused by bacteria, most often staph (Staphylococcus aureus), which are…