somethings like Hives all over body

hi
it's been about 4 months that somethings like Hives grows all over my body's skin, mostly arms, legs, chest that are itchy. sometimes they grow on my face and I ashamed to contact my firends. at first, the doctor at  telephone-emergency told me to inject Betamethasone (milk-color one) and see the result. after injecting, my Hives got better; but after 24 hours they came back. at last, after seeing many doctors, one of them prescript me Hydroxyzine syrup 120 ml and it helped me; but not permanently. if I drink one spoon syrup every 6 hours, most of the hives and itchy manner goes away; but still some hives will remain on my skin. and confusingly, every morning I woke up from bed, too many hives appears on my skin again and they are sometimes big! I upload some photos here:
http://mn1989.persiangig.com/image/KAHIR.jpg

most of the days, in middle of day in university, when I get tired and my body temperature gets high, hives appears rapidly.

I will appreciate any idea and suggestion, thank you.

[nogossipzone]

It (your photo's) do not look like hives to me...I thought hives were just bumpy (like strings of mosquito vites)