Age:7 years Kid having these since 5 months...severe itching in head and whole body Diagnosis and treatment

What can be this due to?... On face and back. Not applied anything. Male, 32 yrs. having since 1 year.

5 years girl multiple scaly lesions on scalp itching and burning since childhood itching more since 10 days diagnosis? treatment?

8 years girl itching and painful scaly lesions since 6 months. diagnosis? and treatment? no loss of hairs.

A 46yrs old male pt having lesion like this as seen in pic on his head plz dx and rx