Contagious red itchy bumps on skin, recurrent

[Katkatnyrh]

It started around May this year when I had these red itchy bumps that looked like insect bites. It was more on my thighs area but i also had some on the trunk and arms. A few weeks later, my husband has it too. After several weeks without treatment the bumps went away but now in August we are experiencing the same thing. He had it first this time then a few days later i had them too. Doctors say it is not contagious but it obviously is. One doctor had me on antibiotics for 10 days but it did not help. Everyday new bumps pop out, and some of the old ones fade. I noticed the bumps come out of the same area at once, like 3 or more red bumps on the arm or thigh. They are very itchy and uncomfortable. Please share your thoughts and experience regarding the matter.