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Psoriasis is a common, chronic skin condition that involves a rapid production of skin cells that build up on the surface of the skin and form scales, patches and other unwanted symptoms. Over seven million people in the US are affected by psoriasis, including men, women and children of all ages.
This condition develops as a result of an autoimmune disorder, in which skin cells replace themselves every three to four days, rather than every 30 days, creating a buildup of cells and causing symptoms to develop on the scalp, elbows, knees, hands, feet and genitals. While there is no cure currently available for this chronic condition, there are several treatment options available to effectively relieve the symptoms of psoriasis.
Cause of Psoriasis
Psoriasis is caused by an immune system disorder involving a type of white blood cell called a T lymphocyte or T cell. While these T cells usually travel through the body to fight off viruses and other foreign substances, in patients with psoriasis they attack healthy skin cells instead, causing an increased production of healthy skin cells and more T cells that build up on the surface of the skin and cause the scaling and patches associated with this condition.
The symptoms of psoriasis can worsen as a result of certain triggers, which may include:
- Injury to the skin
- Alcohol consumption
- Certain medications
Patients can prevent a flare up of symptoms by avoiding these triggers.
Types of Psoriasis
There are five different types of psoriasis, each causing different symptoms. While patients usually only have one type of psoriasis at any given time, another type can appear once the first has cleared. The five types include:
- Plaque psoriasis- the most common type of psoriasis that affects about 80 percent of psoriasis patients, causing raised red lesions that are covered with silvery white scales, usually appearing on the elbows, knees, scalp and back.
- Guttate psoriasis- usually begins during childhood or early adulthood and causes small red spots to appear on the skin of the torso, arms and legs as a result of a bacterial infection such as strep throat.
- Inverse psoriasis- develops within the armpits, groin, under the breasts or other skin folds causing bright red lesions as a result of irritation from rubbing and sweating. This is most common in overweight patients.
- Pustular psoriasis- causes white blisters filled with pus surrounded by red areas of skin, often triggered by medications, UV light, pregnancy or infection and is most common in adults.
- Erythrodermic psoriasis- the least common type of psoriasis that often causes redness and scaling across the whole body, and may lead to serious illness if left untreated.
Symptoms of Psoriasis
Symptoms may vary depending on each patient’s individual condition, but often include:
- Red patches of skin covered with silvery scales
- Dry, cracked skin
- Itching or burning
- Thickened nails
While many cases of psoriasis are merely a cosmetic annoyance, some also cause severe pain, especially when associated with arthritis. Symptoms usually come and go as psoriasis is a cyclic disorder with remissions and flare ups throughout the patient’s life.
Treatment of Psoriasis
Treatment for psoriasis aims to help clear the skin of current symptoms and to interrupt the abnormal cycle that has caused an increased production of skin cells in order to prevent future symptoms from forming. This can be done through topical treatment, oral medication, light therapies or a combination of the three.
Topical treatment for psoriasis is usually in the form of corticosteroids, vitamin D or topical retinoids, which can target inflammation, skin cell growth and DNA activity to effectively treat the symptoms of mild to moderate psoriasis. Light therapy may be used in combination with topical treatments to slow the production of skin cells and improve the overall appearance of the skin, and can be done through exposure to natural sunlight, narrowband UVB therapy or excimer laser therapy.
The Parker Skin & Aesthetic Clinic utilizes the Xtrac excimer laser in our Lake County office. The Xtraclaser reduces symptoms generally in 10-12 treatment sessions with long-lasting relief — typically several months free of symptoms. The Xtrac treatments are generally painless and quick. The treatment is covered by most major insurance companies as well. Since receiving FDA clearance in 2000, the Xtracexcimer laser has become recognized by dermatologists worldwide as the market leader in the treatment of psoriasis and vitiligo. Xtrac lasers produce a highly effective, safe, and painless therapy by delivering a targeted, super-narrow UVB band to affected areas, resulting in effective and rapid improvement.
For more information on the Xtrac treatment, you may also visit http://www.xtracnow.com/
Oral medications may be prescribed for severe cases of psoriasis or those that are unresponsive to other types of treatment, and may include retinoids, methotrexate or cyclosporine.
Biologic medications can result in dramatic clearing of even the most severe cases of psoriasis and keep the skin clear of psoriasis long term. Biologic drugs including Enbrel, Humira and Stelara are used with great success by our patients. Schedule a consultation with one of our dermatologists to see if you are a candidate for biologic therapy for your psoriasis.
There is no permanent cure for psoriasis, although many patients experience remission where it all goes away, sometimes for many years.