There are many reasons why a little baby’s scalp itches and scratches, such as prickly heat, eczema, contact dermatitis, mosquito bites, fungal infections and other reasons. 1. prickly heat: small children have a strong metabolism, if you wear too thick, cover too much or high indoor temperature, may lead to scalp prickly heat, thus causing small children scalp itchy always scratching. 2. Eczema: Inflammatory skin reactions caused by internal and external stimuli can also lead to itchy scalp scratching. 3. contact dermatitis: scalp contact with external sensitizing substances, may lead to small children scalp itchy scratching. 4. Mosquito bites: localized mosquito bites from the outside world, can also cause the little baby scalp itchy scratching. 5. fungal infection: scalp by fungal infection caused by ringworm, can also lead to small children scalp itchy phenomenon. Little baby scalp itchy always scratching, there may be other reasons, need to go to the hospital in time to check, according to the condition of the doctor’s prescription medication.