Monday, February 11, 2013

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What is Psoriasis



Psoriasis is a chronic disease of the skin and the joints.  Psoriasis is a chronic cutaneous disease.  It can be uncomfortable effecting the ability to function.  Due to its impact on appearance, psoriatrics often suffer from psychological and emotional distress.  Psoriasis effects 2 to 3% of the world's population.  Its onset is commonly after puberty.  The skin consists of 3 layers, the epidermis, dermis, and subcutaneous fat.  Epidermis is the visible layer of skin that consists of several layers of cells arranged on top of one another.  New layers of cells continue to develop from the bottom of the epidermis and rise to the top in a process called turnover.  In the continuous cycle, skill cells flew off and are replaced by newer layers.  Normally this cycle takes about 3 to 4 weeks.  This layer provides a tough, flexible, and waterproof covering for the body.  The middle layer is the dermis.  It consists of collagen and gram substances.  Hair follicles are present in the dermis, sebaceous oil glands and epicrine scent glands are associated with these follicles.  While sweat glands help to regulate body temperature, and never endings convey the sensations of pain, itching, touch, or temperature to the brain, the oil glands produce the sebum which helps to moisturize the skin.  The deepest layer of the skin consists of fat.  The eruption of psoriasis involves inflammation in the dermis and hyperproliferation of the epidermis.

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