hi..thanks for your query..
Please do a complete blood investigation including thyroid
evaluation.If these rashes are bumpy,come on and off, and as you say are aggravated by stress
,I would say this is Chronic Urticaria
and takes months and years to resolve.Treatment consists of correct combination of oral anti histaminic tablets and in some cases Oral steroids
over a period of time.Of course these have to be taken on along term basis,as urticaria is very very chronic and persistent!But since this has been occurring for a long time now, do a blood test
before taking any medication.Do not worry,this is a very common condition.I do not think accupuncture can help,intact might aggravate the same.