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.
I found a bunch of threads regarding sore scalp & hair growth. Apparently it's pretty common to have sore scalp when you're having a growth spurt, or about the time you normally are due for a touch-up (for relaxed ladies). Personally, my crown area gets tender at about 5 weeks post (where I am now). That part of my hair also has the most new growth. Nov 6, 2006.