PSORIASIS Psoriasis is a long-term disorder in which skin cells reproduce too rapidly, causing red, thickened patches. Psoriasis tends to recur in attacks, which may be triggered by factors such as infection, injury, stress, or certain medications.
In the most common type, called plaque psoriasis, red, flaky patches (plaques) covered in silver scales appear, usually on the elbows, knees, and scalp, which are itchy and sore. In guttate psoriasis, small, scaly, red patches occur all over the body.
In flexural psoriasis, large, smooth, red patches develop in skin folds. Psoriasis may also affect the nails, which become pitted, discolored, and loose. Psoriasis may also cause psoriatic arthritis .
Psoriasis can often be improved by topical treatments with corticosteroids, emollients, vitamin D analogues (forms of vitamin D), coal-tar preparations, or dithranol preparations. Ultraviolet light therapy may also help. If such treatments are ineffective, tablets or injected medication may be used.

Othere related diseases

SKIN TAG
A skin tag is a small, soft, painless, noncancerous growth attached to the skin by a stalk. Tags usually occur spontaneously and may grow on any part of the bod...

SOLAR KERATOSIS
Also known an actinic keratosis, a solar keratosis is a scaly skin growth caused by prolonged exposure to sunlight. The growths typically appear on the face, ea...

SQUAMOUS CELL CARCINOMA
Squamous cell carcinoma (SCC) is a type of skin cancer that arises from the outer skin layer. It may be caused by prolonged exposure to ultraviolet light (in su...

SYRINGOMA
A syringoma is a noncancerous tumor of the sweat ducts. Syringomas are most commonly found in clusters on the eyelids, but they may also occur elsewhere on the ...

TELANGIECTASIA
In telangiectasia, the small blood vessels just beneath the skin become enlarged, causing redness and a broken veins appearance. It most commonly occurs on the ...

TELOGEN EFFLUVIUM
In telogen effluvium, there is widespread thinning of the hair on the scalp. Often, the cause of the condition is unknown, but telogen effluvium may sometimes b...

TRICHOTILLOMANIA
Trichotillomania is an impulse-control disorder in which a person compulsively and repeatedly pulls out his or her own hair. The person typically pulls or twist...

URTICARIA
Also called hives or nettle rash, urticaria is an itchy, raised rash that may affect the whole body or just a small area of skin. It usually lasts for only a fe...