Scalp and face are involved in
Adult scabies
Nodular scabies
Infantile scabies
None
Areas spared in scabies - scalp & face high density of hair follicles Infants- face ,scalp, palms and soles typically involved vesicles bullae, secondary bacterial infection is more common in infantile scabies iadvl textbook of dermatology page 429
Fungal infections, Scabies, Pediculosis