The science of preventive medicine and the preservation of health. Also commonly used as a euphemism for cleanliness and proper sanitation.
- Hygiene hypothesis
— the lower incidence of allergy in those living on farms or in rural areas (due possibly to more exposure to bacteria in barns and elsewhere in the country); the lower incidence of allergy in younger children of large families with 3 or more older siblings (due perhaps to repeated exposure to infection from older […]
A thin membrane that may completely or partially cover the vaginal opening before first sexual intercourse but that usually disappears before puberty.
The muscle that permits the tongue to be held on the floor of the mouth.
Prefix meaning high, beyond, excessive, or above normal, as in hyperglycemia (high sugar in the blood) and hypercalcemia (high calcium in the blood). The opposite of hyper- is hypo-.
- Hyper-IgD syndrome
A genetic disorder characterized by recurring attacks of chills and fever that usually start before the first birthday and last for 4 to 6 days, usually accompanied by swollen glands in the neck and abdominal pain with vomiting or diarrhea. Other symptoms may include headache, joint pain (arthralgia), arthritis of the large joints, and reddish […]