5 Common causes of itchy scalp

1. Dandruff & seborrheic dermatitis: it's the most common cause of itchy scalp. It develops as a result of overgrowth and hyperactivity of yeast. Management of this condition includes shampoo containing zinc and selenium. In resistant cases topical antifungal and cortisone are needed.
2. Psoriasis: it's an autoimmune disease characterized by the formation of reddish scales over the scalp and skin. Psoriasis isn't a contagious disease, but it can be hereditary. Treatment of scalp psoriasis includes using shampoo containing coal tar and salicylic acid as well as topical cortisone.
3. Tinea capitis: it's a fungal infection that causes round patches of hair loss that increase in size over time. Tinea capitis is caused by ringworm, so oral and topical antifungal drugs are needed for proper management.
4. Head lice: many people think head lice are more common with poor hygiene. In fact, lice prefer clean hair, so having head lice doesn't mean you have poor hygiene. Treatment of this case is so simple; it just includes shampoo containing certain insecticides as Pyrethrin.
5. Allergic reactions: there are many factors that may cause scalp allergic reactions such as hair dyes. Management of allergic reactions depends mainly on identifying the allergen then avoiding it.