why is my scalp so itchy

An itchy scalp can be caused by various factors, often related to skin conditions or irritation. The most common cause is seborrheic dermatitis, known as dandruff, which is inflammation of the scalp causing itching, flaking, and sometimes redness. Other causes include dry scalp, allergic reactions to hair products, fungal infections like ringworm, head lice, scalp psoriasis, contact dermatitis, and other underlying medical conditions like diabetes or anxiety. Sometimes the itchiness results from buildup of oils, sweat, dead skin cells, and hair products clogging the scalp follicles. Environmental factors like harsh shampoos, water temperature, and stress can also contribute. If the scalp is itchy without visible flakes or redness, it may be due to scalp sensitivity or dryness. Infections like scalp ringworm or infestations such as head lice produce intense itching and may require medical treatment. Psoriasis can cause thick, scaly itchy plaques on the scalp. Allergic reactions to hair dyes or shampoos cause contact dermatitis characterized by burning, redness, and itchiness. For many people, itching worsens after washing hair due to disruption of natural oils or sensitivity to product ingredients. Proper scalp care, avoiding harsh chemicals, and using medicated shampoos when necessary can help relieve symptoms. If itching persists or is severe, a consultation with a dermatologist is recommended for diagnosis and appropriate treatment.