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What is Psoriasis and how it takes shape of an outbreak?
Posted on Nov 07, 2015
Psoriasis is a chronic skin disorder that produces thick, pink to red, itchy areas of skin covered with white or silvery scales. The rash usually occurs on the scalp, elbows, knees, lower back and genitals, but it can appear anywhere. It can also affect the fingernails.

Psoriasis usually begins in early adulthood but it can start later in life. The rash can heal and come back throughout a person’s life. Psoriasis is not contagious and does not spread from person to person. In most people, the rash is limited to a few patches of skin. In severe cases, it can cover large areas of the body.

How does the rash start?

Psoriasis starts as small red bumps, that grow in size and scales form on top. These surface scales shed easily, but scales below them stick together. When scratched, the lower scales tear away from the skin, causing bleeding. As the rash grows larger, “plaque” lesions can form.

What are the symptoms of psoriasis?

As well as the symptoms described above, the rash can be associated with:

What causes psoriasis?

The cause of psoriasis is unknown. The condition tends to run in families, so it may be passed on to children by parents.

Psoriasis is relates to a problem of new skin cells developing too quickly. Normally, skin cells are replaced every 28 to 30 days. In psoriasis, new cells grow and move to the surface of the skin every three to four days. The build up of old cells being replaced by new cells creates the hallmark silvery scales of psoriasis.

What causes psoriasis outbreaks?

No one knows what causes psoriasis outbreaks. How serious and how often outbreaks happen varies with each person. Outbreaks may be triggered by:
  • Skin injury (cuts, scrapes or surgery, for example)
  • Emotional stress
  • Streptococcal and other infections
  • Certain prescription medicines (e.g., lithium, certain beta blockers)

How is psoriasis treated?

There are many treatments for psoriasis. Your health care provider will select a treatment plan depending on the seriousness of the rash, where it is on your body, your age, health and other factors. For a limited disease, with only few areas on the skin topical creams or ointments may be all that is needed. When larger areas are involved, or joint pain indicating arthritis is suspected, additional therapy may be needed.

Common treatments include:
  • Steroid creams
  • Moisturizers (to relieve dry skin)
  • Anthralin (a medicine that slows skin cell production)
  • Coal-tar (common for scalp psoriasis may also be used with light therapy for severe cases available in lotions, shampoos and bath solutions)
  • Vitamin D3 ointment, ordered by your doctor

Treatment for severe cases:
  • Light therapy (ultraviolet light at specific wavelengths decreases inflammation in the skin and helps to slow the production of skin cells)
  • PUVA (treatment that combines a medicine called "psoralen" with exposure to a special form of ultraviolet light)
  • Methotrexate (a medicine taken by the mouth methotrexate can cause liver disease, so its use is limited to severe cases and is carefully watched with blood tests and sometimes liver biopsies)
  • Retinoids (a special form of Vitamin A-related drugs, retinoids can cause serious side effects, including birth defects)
  • Cyclosporine (a very effective capsule reserved for severe psoriasis because it can cause high blood pressure and damage to kidneys).
  • Newer drugs for treating psoriasis include immune “biologic” therapies. They work by blocking the body's immune system from "kick-starting" an autoimmune disease such as psoriasis.

Can psoriasis be cured?

Psoriasis cannot be cured, but treatment greatly reduces symptoms, even in severe cases.
Written by : Lazoi Team
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