The psoriasis is an autoimmune skin disease in which this immune reaction causes an acceleration of the skin growth.
In the same way, the psoriasis is an inflammatory disease of the skin, which frequently affects joints, causing redness, peeling, pain, and swelling. It can present itself with different intensity throughout life and is not contagious.
In psoriatic patients, the epidermal cell turnover lasts 3 or 4 days, while in the rest of the people it lasts between 28 and 30 days. This fact causes an accumulation on the surface, producing plaques with thick and reddish skin scales that generates itching or pain.
For this reason, the typical lesions of psoriasis are reddish plaques with a silver peeling, which appears especially on the elbows, knees and on the scalp. Sometimes they produce itching. The joints, the palms of the hands, the nails and the soles of the feet can also be affected.
There are many factors that influence the psoriasis appearance. In addition to the genetic tendency, other risk factors affect as well, such as infections, medicines and external irritations such as wounds.
The psychological factors will also alter the course of the disease. For example, the stress worsens enormously the symptoms.
Likewise, the climate also influences, although in the summer the symptoms of psoriasis improves due to the sun radiation. The sun’s rays reduces inflammation and the autoimmune reaction itself.