| A | B |
|---|
| Albino | a person born with white hair, accompanied by no marked pigment coloring in the skin or irises of the eyes. |
| Alopecia areata | the sudden falling out of hair in round patches, or baldness in spots, sometimes caused by anemia. |
| Androgenetic alopecia | hereditary hair loss. |
| Arrector pili | a small involuntary muscle attached to the underside of the hair follicle. |
| Barba | the face |
| Boil or furuncle | an acute staphylococci infection of a hair follicle that produces constant pain. |
| Canities | the technical term for gray hair. |
| Capilli | hair of the head. |
| Carbuncle | the result of an acute staphylococci infection and is larger than a furuncle. |
| Cortex | the middle or inner layer of the hair, which gives strength and elasticity to the hair. |
| Cowlick | a tuft of hair standing up. |
| Cuticle hair | the outside horny layer is composed of transparent, over-lapping, protective scalelike cells. |
| Dandruff | consists of small, white scales that usually appear on the scalp and hair. |
| Density | refers to how much hair is covering the scalp in the area of hair loss. |
| Hair elasticity | the ability of hair to stretch and return to its original form without breaking. |
| Favus | honeycomb ringworm, characterized by dry, sulfur-yellow, cuplike crusts on the scalp, called scutula. |
| Fragilitas crinium | the technicl term for brittle hair or split ends. |
| Furuncle | an acute staphylococci infection of a hair follicle that produces constant pain. |
| Gray hair | hair with decreasing amounts of natural pigment. |
| Hair bulb | a thickened, club-shaped structure that forms the lower part of the hair root. |
| Hair follicle | a tubelike depression, or pocket, in the skin or scalp that enchases the hair root. |
| Mottled | spots of white or whitish yellow scattered about in the hair shafts. |
| papilla | a small, cone-shaped elevation located at the bottom of the hair follicle. |
| root | that portion of the hair structure located beneath the skin surface. Portion of the hair enclosed within the follicle. |
| Shaft | visible part of each strand of hair. |
| Whorl | a circular pattern, as in the crown. |
| Hair color | color of hair created by nature. |
| Pediculosis capitis | a contagious condition caused by the head louse (animal parasite) infesting the hair of the scalp. |
| Hypertrichosis | means superfluous hair, an abnormal development of hair on areas of the body normally bearing only downy hair. |
| Keratin | a protein that is the chief component of hair and nails. |
| Lanugo hair | the fine, soft, downy hair on the cheeks, forehead, and nearly all other areas of the body. |
| Medulla | the innermost layer referred to as the pith, or bone marrow, of the hair shaft-composed of round cells. |
| Melanin | the coloring matter or pigment contained in the cortex of the hair. |
| Monilethrix | the technical term for beaded hair. The hair breaks between the beads or nodes. |
| Pattern | refers to the shape and location of the area with hair loss. |
| Pityriasis | the medical term for dandruff. |
| Capitis simplex | dry type of dandruff. |
| Steatoides | a greasy or waxy type of dandruff. |
| Porosity | ability of the hair to absorb water or other liquids. |
| Postpartum alopecia | hair loss experienced at the conclusion of pregnancy. |
| Ringworm | caused by a vegetable parasite. |
| Scabies | caused by an itch mite burrowing under the skin - highly contagious. |
| Scutula | dry, sulfur-yellow cuplike crusts on the scalp. |
| Sebaceous | glands consist of little sac-like structures in the dermis. |
| Sebum | the normal secretion of an oily substance from the sebaceous glands. |
| Supercilia | hair of the eyebrows. |
| Telogen, effluvium | the premature shedding of hair in the resting phase can result from various causes. |
| Tinea capitis | ringworm of the scalp, characterized by red papules, or spots, at the opening of the hair follicles. |
| Tinea favosa | honeycomb ringworm, characterized by dry, sulfur-yellow, cuplike crusts on the scalp. |
| Tinea | medical term for ringworm. |
| Tinea ungium | ringworm of the nails - an infectious disease caused by a fungus. |
| Traction (traumatic alopecia) | hair loss due to repetitive traction or twisting of hair. |
| Trichology | the study of hair and its diseases. |
| Trichoptilosis | the technical term for split hair ends. |
| Trichorrhexis nodosa | (knotted hair) a dry brittle condition including formation of nodular swellings along the hair shaft. |
| Whorl | a circular pattern, as in the crown. |
