Pityriasis Alba: Symptom and Causes

Symptoms

  • Round or oval patches of pale pink or red skin
  • Dry scaling
  • Lesions are round or oval raised or flat , of 0.5 to 2cm in size although may be larger if they occur on the body (up to 4cm), and usually number from 4 or 5 to over 20. 

Causes

The exact cause is unknown but certain risk factors include:
  • Excessive dry skin followed by sunlight exposure may lead to pityriasis alba
  • Family history
  • Rashes on dry skin
  • Medical conditions like asthma and allergies 




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