The condition has been regarded as a manifestation of atopic dermatitis. Acanthosis and mild spongiosis is seen, with moderate hyperkeratosis and patchy parakeratosis. Follicular plugging, spongiosis, and sebaceous gland atrophy may be seen. On electron microscopy, reduced numbers of active melanocytes and a decrease in number and size of melanosomes are seen in affected skin. Pityriasis alba resolves spontaneously and may not require treatment.
Treatment includes a simple emollient cream.
For chronic lesions on the trunk, a mild tar paste may be helpful. Dermatology may be consulted for cosmetic camouflage. No dietary recommendations currently are proposed. No specific activity limitations or exercises are recommended. Photoprotection may be considered.