### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
i got a really nasty big blister on my shin a few months ago,,,i thought it was a possible insect bite ,,,it was painful, but eventually healed. a week later i got a row of 6 to 8 large red blister,bumps on other calf,,,,then on back of right arm then on back of left arm,,,,now in a row on my face. they are very uncomfortable and itch when they go away . i think i get a low fever when they are coming before they break out, i have taken prednisone and several antibiotics, used prescription cream, been to dr twice. also have took allergy meds. they finally went away,,,,but back again. ever since the first big bug like blister ...i find a new line of big knots under my skin that eventually raise n turn red,,,,soetimes have tiny little blisters but not always. have not felt good since. very achy, letharic, joint pain,????? what is happening???also noticed my veins seem to be alot more noticeable...possibly a coincidence or paranoia. they seem to get worse when i am working alot or under stress,,,may also be coincidence?? but they are always in a row . between three and seven.

### output:

Hello, Welcome to Chat Doctor, The blisters may be due to allergic reaction, contact dermatitis, eczema or any Chat Doctor. But the blisters occurring all over the body at different time to be evaluated properly by the skin specialist. It may be due to some insect bite also with the available medical history this is what I can suspect. If you are able to identify the causes for the rashes then treatment will be easy. I suggest you to consult your doctor for proper diagnosis. Thank you.