Steroids (short for corticosteroids) are synthetic drugs that closely resemble cortisol, a hormone that your body produces naturally. Steroids work by decreasing inflammation and reducing the activity of the immune system.teroids (short for corticosteroids) are synthetic drugs that closely resemble cortisol, a hormone that your body produces naturally. Steroids work by decreasing inflammation and reducing the activity of the immune system.
A wide variety of chemicals have the potential to irritate the scalp and cause pain and sensitivity. Although virtually any chemical can potentially cause scalp sensitivity, harsh chemicals such as hair dye, permanent wave solution and hair straighteners are more likely to cause pain and sensitivity than shampoos, conditioners and other everyday hair products.
Bumps on the scalp can be indicative of several conditions. Red, painful bumps can appear on the scalp for several reasons. Skin conditions, infections and irritation may cause hair follicle inflammation, leading to pimple-like bumps or rashes and even hair loss in some areas. Understanding possible reasons for their development can help guide treatment and responsiveness.