Hi Mom of 3- From all of my 8 month long research, and visits to a GP, 2 Derms. and an Allergist/Immunologist, my very best guess (and it's a good one) is that you have Eczema or Hives, both of which can exist in many forms and affect the scalp and body.   Do the itchy bumps come and go suddenly, or do they last for weeks? I have both Eczema and Hives (as if suffering with one isn't enough). The Eczema is the better of the two, as it comes on strong and then clears gradually. The hives however, are no fun at all.   They are chronic, and can last up to 6 weeks. They usually affect my waistline area, as well as tender spots at the auxillary area of my arm. They are SO itchy, that Ive been put on Cymbalta to keep me from going crazy (and it has helped tremendously)   I find it disconcerting that of all the Doctors Ive seen, no one ever mentioned the top culprits for Eczema and Hives. Hives reactions can have no link at all, and can be from simple stress issues. Allergic Hives are most linked to cow's milk, nuts, dairy, etc. You can gogle this for more info. I have stopped cows milk, and gone to Silk Light Soymilk, and it has really helped a lot.   I am most certain that my Eczema has hormonal connections. (this you can also Google) It appears sometime before my menstrual cycle, worsens, and then goes away following.   This was all a sudden onset for me, at a very stressful time, so I believe this is a combination of causes. (perhaps for you too) From my experience, no Dr. acts like Hives or Eczema is any big deal-contrary to your great suffering.   The best thing you can do is to be your own advocate. Search the web and try cutting WAY back on foods that cause skin irritation, as well as bathing tips. I have found that Dove Sensitive Skin unscented and luke warm bath water helps a lot.   I also take the following to control itching, and my condition is MUCH better now:   In the Am- Zantac 150 and Allegra (yes, Zantac helps with itching)   Lunch Supplements- VItamin C-Women's Multivitamin- Cod Liver Oil- Caltrate +D   Night- Zyrtec 10 + Zantac 150 (or 50mg of Benadryl if I'm very itchy)   I hope this helps, I'm sad to say Ive had this condition for 8 months now-and NO Doctor or skin biopsy or blood test has been able to conclude the cause. Stress can do awful things.   Let me know if you have any other questions :) I hope you find relief soon!