Dermatology - Pityriasis Alba

Dermatology - Pityriasis Alba 
Pityriasis alba is a common form of hypomelanosis that can be disfiguring and is most frequently observed in children who have darker skin types.
Pityriasis alba has a tendency to be asymptomatic, and it is most frequently observed on the face. Risk factors include being exposed to ultraviolet light, taking frequent baths, and taking hot baths.

The lesion is often circular or oval in shape, and it is characterized by a hypopigmented or white area with indistinct edges and a powdery scale that is off-white in color.
Psoriasis, fungal infections, tuberous sclerosis, mycosis fungoides, and vitiligo are all potential causes of postinflammatory hypopigmentation. The diagnosis is made through clinical examination, and the differential diagnosis takes into account all of these conditions.

Some useful treatments include the application of topical steroids and emollients, the reduction of sun exposure, the application of sunscreen, and the reduction of bathing frequency and temperature. Oral antifungals and photochemotherapy with PUVA have the potential to be beneficial as well.