What causes red bumps on the scalp?

Answer

Bumps on the scalp can be caused by a variety of factors. One of them is folliculitis which is an infection of the hair follicle that causes the head to be tender and painful. Head lice, the parasitic insects that live on the surface of the head and feed on blood can also lead to bumps on the scalp. Improper or irregular hair grooming can also cause bumps to develop on the scalp.
1 Additional Answer
Bumps on one's scalp may cause redness, itching, and irritation of the skin. There are many causes for these bumps, including: lupus, head lice, and plaque psoriasis. If there is any concern, please seek a doctor's consultation. 
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