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Attention, chocolate lovers: You may not be able to help yourselves. Swiss and British scientists have linked the widespread love of chocolate to a chemical "signature" that may be programmed into our metabolic systems.
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Psoriasis

Symptoms & Signs

What are the signs and symptoms of the disease?

Following are the five major types of psoriasis, each with its own characteristic skin lesions:

erythrodermic psoriasis, which causes reddening and swelling of large areas of skin

guttate psoriasis, which causes small skin lesions that look like drops of fluid

inverse psoriasis, which causes smooth red lesions in the folds of the skin

plaque psoriasis, the most common type, which causes raised red skin lesions that develop silvery-white scales

pustular psoriasis, which forms blisters filled with thick white material

Other symptoms of psoriasis are as follows:

crumbling or abnormal fingernails and toenails

itching

thickening, cracking, and blistering of the palms or soles of the feet

The severity of symptoms may range from a mild cosmetic problem to a disfiguring, disabling condition.

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