Facts on File Encyclopedia of Health and Medicine

the child’s age, comprehension, and communica- tion abilities. Sudden loss of vision in one eye or both eyes is an emergency tha ...

eye. Recovery from uncomplicated vitrectomy takes about two to three weeks. Complex vitrec- tomy, such as when there is retinal ...

Structures of the Integumentary System SKIN SEBACEOUS GLANDS epidermis sebaceous dermis ducts subcutaneous layer NAILS SWEAT GLA ...

...

Renewal and protection: the epidermisThe pri- mary cells of the skin’s surface layer, the epidermis, are melanocytes, which prod ...

ing the blood back within the body’s core. This same mechanism also responds to strong emotions such as fear or embarrassment, s ...

Deep at the base of the hair follicle within the dermis (middle layer of the skin) is the hair root, which forms the cells that ...

Breakthrough Research and Treatment Advances Among the most exciting advances in derma- tology are new techniques in SKIN REPLAC ...

A acne INFLAMMATIONof the SKIN’s sebaceous struc- tures, also called acne vulgaris, that results in eruptions on the skin surfac ...

scars. Products to treat mild to moderate acne are available without a doctor’s prescription. Prescrip- tion-only medications, s ...

and scrubbing can aggravate acne, causing increased inflammation and irritation. Harsh soaps that dry the skin may temporarily r ...

Treatment may cause discomfort. Small lesions typically heal in two to three weeks with minimal or no scarring. Larger or numero ...

sity to accumulate fat, the diminished integumen- tary adipose tissue reduces the skin’s ability to reg- ulate heat loss and ret ...

to convert the essential amino acid tyrosine to melanin. OCA type 1 features nearly complete absence of pigmentation and usually ...

tions. Common forms of alopecia include the fol- lowing: Androgenic alopecia, or male pattern hair loss, in which a man’s hairl ...

Minoxidil and finasteride can cause serious BIRTH DEFECTS when they enter the system of a woman who is preg- nant. Women of chil ...

B baldness See ALOPECIA. bedsore See DECUBITUS ULCER. birthmark A discoloration on a newborn’s SKIN present at, or that emerges ...

140 The Integumentary System BIRTHMARKS Clinical Name Type Common Names Characteristics capillary hemangioma vascular strawberry ...

causes them to occur, there are no known meas- ures for preventing them. Any changes in a birth- mark that has been stable in si ...

Treatment generally is twofold, targeting the underlying cause as well as aiming to relieve symptoms such as itching and the bul ...