I have had a itchy red, bumpy rash for a year. started on my hands, then wrists and forearms, then armpits. I have used every otc medicine and was given anti itch pills and creams by a doctor. it may almost go away then it starts up in a new area. I now have it on both shins, they itch and have red bumps and are swollen. I also have it on both buttock cheeks really bad. painful to sit, it does not like heat and I am at my end with this. can you help.