Hello,
I cannot confirm anything without examination but it can be due to pityraisis alba or millaria.Millaria is especially common in children and infants due to their underdeveloped sweat glands and is found in hot climate. Pityriasis alba is a common skin condition mostly occurring in children and usually seen as dry, fine-scaled, pale patches on the face.
No treatment is required and the patches in time will settle in due course of time. The redness, scale and itch if present may be managed with simple emollients and sometimes hydrocortisone, a weak steroid, is also used.Severe cases may require PUVA therapy.
I would suggest a dermatologist’s evaluation for the same.
Hope it helps.Take care and pls do keep us posted on how you are doing or if you have any additional queries.Kind regards.
Miliaria respond to calamine ext application.