why does my scalp itch

An itchy scalp can be caused by several factors, the most common being seborrheic dermatitis (dandruff), which causes itching along with flaking skin. Other causes include dry scalp, allergic reactions to hair products, scalp psoriasis, fungal infections like ringworm, head lice, and conditions such as eczema or contact dermatitis. Sometimes, it can also stem from an underlying medical condition or sensitivity of the scalp skin. Treatment depends on the cause and may include using specific shampoos, avoiding allergens, or seeking medical advice for underlying conditions.