Scalp psoriasis is as the name suggests psoriasis of the scalp. It is a very common condition and majority of the people who are suffering from psoriasis have it on their scalp. The biggest problem with scalp psoriasis is that treating it can be very difficult and may require especially formulated treatment. Out of all the scalp psoriasis, plaque psoriasis is the most common form where plaques is formed as red coloured skin with a silvery scale that causes burning sensation and itching.
Psoriasis is also most commonly found in the area around the legs, trunk, and arms. Knees, elbows and lower back are also very commonly affected by psoriasis. Psoriasis is not a contagious disease but it can be inherited. Research indicates that this disease can result from a kind of disorder in the immune system.
The scaly patches which appear in psoriasis are called psoriatic plaques. The area affected by this disease there is rapid skin growth. The area covered by psoriatic plaques turns red and silvery.
There are many different types of psoriasis in terms of severity. Some patients have a very minor localized patches that appear all over the body. The psoriatic nail dystrophy is also seen very commonly in patients. In this condition the toenails and fingernails are affected. Psoriasis can also result in inflammation in the joints which is known as psoriatic arthritis that affects approximately 15% to 20% of the psoriatic patients.
Causes of Psoriasis
Experts are still not very sure about the causes of psoriasis as most of them believe that genetic component can trigger the disease after a prolonged injury to the skin. Excessive alcohol consumption can also be one of the reasons for this disease. Other factors that can cause psoriasis are excessive mental stress, smoking and withdrawal of systemic corticosteroid medications which contain elements that may instigate psoriasis. Psoriasis is a long lasting chronic condition. Some cases have periods with no symptoms whereas others have to live with symptoms and signs all their lives.