Psoriasis, eczema, scalp acne and seborrheic <span style = 'background-color: #dae8f4'>dermatitis</span>
are the common causes. Using shampoos with harsh chemicals or not rinsing the hair thoroughly after washing can
lead to a dry itchy scalp. Treatment will depend on the underlying cause.Seborrheic dermatitis can
be treated with shampoo containing ketoconazole or selenium sulfide. Scalp eczema may respond to shampoos containing aloe vera
, tea tree oil, or neem oil. If the symptoms are severe see a dermatologist and get the cause confirmed .