G.M.
I have the same problems plus brittle hair, smelly, greasy scalp and skin! It started after soon after I gave birth to my daughter who is now 17mo. and has been getting worse.
My Dr. put me on thyroid meds. It's been 4months now and no change.
I'am also now seeing a dermatologist. He thinks it is sebboric (sp?) dermatitis.
Good luck!