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Psoriasis is a non-contagious skin disorder caused by the rapid surfacing of immature skin cells called keratinocytes.
Normally, within a single month, keratinocytes mature as they travel to the top layer of your skin which then sheds dead cells with little to no notice. In a case of psoriasis, the migration of keratinocytes to the top layer of your skin happens within about four days - too quick for your skin to shed properly. This causes skin plaque; An accumulation of skin in thick, dry patches. Blood flow is then increased under the surface of the skin causing the redness and inflammation most commonly associated with psoriasis.
Although psoriasis can affect any area of the body, it is mostly found on the scalp, elbows, hands, knees and feet. It can also be found in areas prone to sweat such as the lower back and around the belly button. |
