The main causes of an itchy scalp
1 – Dandruff and seborrheic dermatitis: the main suspects
Dandruff, those unsightly small white flakes, often appears due to excess sebum or harsh products. It causes annoying itching, and the more you scratch, the more irritated your scalp becomes.

Seborrheic dermatitis, on the other hand, goes further: it’s a chronic inflammation that causes red patches with thick, yellowish scales. Besides the scalp, it can also affect the eyebrows, the back of the ears, or even the sides of the nose.

Pityriasis rosea, a lesser-known condition, can also affect the scalp. It manifests as a large, dry patch, followed by several smaller patches.

How to relieve pain?

Moisturize with soothing lotions.
Avoid scratching to avoid further irritating the skin.
Pityriasis usually resolves spontaneously within a few weeks.