Folliculitis results from an infected hair follical and typically produces a very painful redish lump, similar in some respects to acne.
If the folliculitis goes untreated it tends to spread and create areas of skin which can crack much like very dry skin results in small cuts.
It is quite possible that your condition is totally unrelated to folliculitis, which makes seeing your gp a good idea in order to have piece of mind.
Regards
mike