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Pityriasis Alba


Pityriasis alba is a outlandish disorder of the skin. Pityriasis alba is comparatively common, occurring in up to 5% of children, but the exact epidemiology has not been described. Occassionally pityriasis alba is addlepated with tinea versicolor, which is an autoimmune response to a fungus on the skin. The rash appears to get bad when the skin is dry. It is often supposed of as a mild form or eczema. Typically it appears as light colored patches of skin sited commonly on the face, arms and trunk. The patches are usually asymptomatic, but sometimes they are mildly itchy.

Pityriasis alba does not harm a child. This condition is not jeopardous or contagious. Frequently, the patches are sharply delimitated; the edges may be erythematous and slightly elevated. Pityriasis Alba suspend on the body symmetric minimally scaly hypopigmented discrete and confluent macules. Pityriasis alba patches are more superficial in summer, specially in dark-skinned children, as they don't tan as well as the surrounding skin.

Pityriasis alba is a common skin disorder analogous to very mild eczema. Pityriasis alba does not appear to be more prevailing in any race; however, it is more apparent in dark-skinned individuals. Pityriasis alba can also be confounded with vitiligo. Pityriasis alba can be preeminented from vitiligo by the border of the rash. Pityriasis alba is most frequent in children aged 3-16 years. It sometimes may occur in adults. It is usually noticed in people who have a personal or family history of asthma, allergies, or atopic eczema. It may appear like a fungus infection of the skin, but it is unrelated.

Pityriasis alba is an eczematous dermatosis with hypomelanosis secondary to postinflammatory variations and the UV screening qualities of the hyperkeratotic and parakeratotic epidermis. The involuted patches don't darken with sun exposure the way the surrounding skin does. Pityriasis Alba will clear up after a few months, or in some cases persevere two or three years. No treatment is required, but a moisturizing cream may improve the dry aspect.

Causes of Pityriasis alba

The common causes and risk factor's of Pityriasis alba include the following:

  • The actual causes of pityriasis alba is yet not known properly.
  • Pityriasis alba often becomes more ponderable after sun exposure.
  • Dry skin is also one of the probable cause.
  • A personal or family history of asthma, allergies, or atopic eczema.

Symptoms of Pityriasis alba

Some sign and symptoms related to Pityriasis alba are as follows:

  • Oval patches on face.
  • Lesions don't tan during the summer.
  • Minimal itching may be present.
  • Several round or oval slightly scaly pink patches.
  • Spots or rash may redden rapidly in the sun.
  • Two to three macules are usually present, with a diameter of 5 to 30 mm.

Treatment of Pityriasis alba

Here is list of the methods for treating Pityriasis alba:

  • The condition often goes away by itself after a few months to years.
  • Using a moisturizer or hydrocortisone may make the patches go away faster.
  • If the patches are red or itchy, a mild topical steroid cream can be applied for a few days.
  • Pimecrolimus cream has also been coverged to be effective.
  • For chronic lesions on the trunk, a mild tar paste may be helpful.