What is Psoriasis

psoriasis.jpgPsoriasis is a skin condition characterised by red areas on the skin surrounded by silver scaly patches in the affected areas. It is caused by excessive growth of the top layer of the skin (epidermis). The epidermis of a person affected by psoriasis is far more active than that of a normal person the rate of cell reproduction is much greater (about 3 times).The excessive growth of the skin is due to abnormal behavior of white blood cells(T cells), associated with the immune system. When an area of skin is affected by psoriasis, these cells act as though the skin were damaged or cut, and attempt to repair the skin. This is done by producing new skin cells, at a much faster rate than skin that is not damaged. Despite the appearance of severe trauma in the area of skin affected by psoriasis the skin is not damaged and can return to complete normality. The abnormal skin cell re-production results in the skin becoming red and inflamed as blood supply to the area increases. Finally the skin becomes thick and scaly with an excess dead skin which it cannot shed fast enough.



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