Buildup from shampoo or hairspray can also cause scalp acne. These bumps can be painful, itchy, red, or inflamed. They may also bleed. Treating scalp acne sometimes starts with switching up your ...

Lice cause the skin to develop red bumps on the scalp, neck, and shoulders. Symptoms include: Severe itching Intense scratching Sores and scabs Possible infection (from scratching) Red bumps (in ...

An imbalance of the skin's flora due to an overgrowth of yeast can cause an itchy, flaky rash on your scalp. Symptoms may include a red or purple rash, cracks or patches on the skin, white flaky ...

If you have an itchy scalp at night, common causes like psoriasis or eczema may be the first thing that come to mind. However, other reasons for your itchy scalp include hives, dandruff ...

This causes inflammation, which can result in itchy hives. These hives, called a stress rash, are most common on the neck, arms, and chest, but can sometimes occur on the scalp, Gonzalez says.

So, if your scalp comes into contact with a product or ingredient that you're sensitive or allergic to, you can experience inflamed, itchy, sore red patches, says Massick. Picking these patches ...

Ahead, see expert insight from leading dermatologists and trichologists—a.k.a. hair and scalp specialists—on what causes dry and itchy scalp, as well as how to prevent and treat it.