Itchy welts and o ccassional sting like small ant bite

[danab2u]

I started out with red bumps like flea or mosquito bites where my shirtsleeve shirt stopped. Spread everywhere as welts, just read and swollen and no oozing. Once in a while feels like a tiny sting but nothing visible. I have washed all bedding twice. Anyone gave any idea what I have? Had 3 days. Used cortisone cream and antihistamine and Calimine. Nothing helps. Is spreading all over and I think my sister in law may be getting it too

[purple1234567]

Sometimes washing bedding won't get rid of the bugs- if that's the cause, as they can be a little more stubborn to get rid.  There are two people you can consult on this- first, your doctor- they can look at the rash and let you know if it is bugs that is causing it or something else.  Another person you may want to contact is an exterminator, they can look around your home and see if there is any evidence of bugs and help you with how to get rid of them.

Is your sister in law living in the same place as you are?