Maybe pityriasis lba...Pityriasis alba resolves spontaneously; treatment consists primarily of good general skin care and education of a young patient’s parents about the benign nature of this self-limited disorder. Therapy may also include the following: Topical antifungal creams Low-potency topical steroids (eg, hydrocortisone 1%, desonide 0.05%): May help with erythema and pruritus associated with the initial lesions and may accelerate repigmentation of existing lesions; use should be limited, however, to avoid long-term skin atrophy and steroid changes Tar paste: May be helpful for chronic lesions on the trunk Bland emollient cream: Used to reduce the scaling of lesions, especially on the face Psoralen plus ultraviolet light A (PUVA) photochemotherapy: May be used to help with repigmentation in extensive cases; recurrence rate is high after treatment is stopped [6] Tacrolimus ointment 0.1% and pimecrolimus cream 1%: Have been reported to be beneficial in the treatment of pityriasis alba...Consult near dermatologist they will help you