Hair, exclamation point
See Exclamation point hair.
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- Hair, lanugal
The downy hair on the body of the fetus and newborn baby. The lanugal hair (or lanugo) is the first hair to be produced by the fetal hair follicles. It is very fine, soft and usually is unpigmented. The lanugal hair is prenatal hair. It appears at about 5 months of gestation and begins to […]
- Hair-on-end skull
Thin fine linear extensions radiating out from the skull that look on an X-ray like hair standing “on-end” from the skull, an appearance associated with hemolytic anemias such as sickle cell disease and thalassemia. The “hair” represents the accentuated trabeculae extending between the inner and outer skull tables through the diploe in the expanded bone […]
- Hairball
A wad of swallowed hair. Hairballs sometimes cause blockage of the digestive system, especially at the exit of the stomach. Also called ‘trichobezoar.
- Hairy cell leukemia
A rare type of chronic leukemia in which the abnormal white blood cells appear to be covered with tiny hairs when examined microscopically. The hairy cells are malignant B lymphocytes. There may be too few normal blood cells of all types because of an exc
- Halitosis
An unpleasant odor from the mouth, commonly referred to as bad breath. Halitosis can be caused by the consumption of certain foods, poor oral hygiene, alcohol or tobacco use, dry mouth, or by certain chronic medical conditions.