Why do I have all these hives?

For about five days, I had an extremely itchy scalp. Now for the last five days, I wake up with horrible hives up and down my body and swollen extremities. This was all preceded by a cough and I am a non-smoker who doesn't usually cough so I'm trying to figure out if this is a cold or allergies. Also, I had a kid at the school I teach at cut my finger open with a scissors and Had to have a tetanus booster and some antibiotics. Now I feel like I definitely had the cough before this and I think the itchy scalp too. So I can't figure out if it's all related. I'm very nervous. It's particularly at night when I break out in hives. It's basically in the last two hours that my body has broken out. And during the day, they subside for the most part. I will go back to the doctor, but when I went to him on Friday, I had absolutely no hives and my lung were clear so he figured it's just some sort of allergy. I just took some pictures of the hives so hopefully those will help.

Hives can be caused from many things, and most people never figure out what it was. For hives to come on so suddenly, it is usually caused by a change in your routine. New soap, laundry detergent, any new foods etc.

If nothing has changed, I would see a doctor to determine what has changed in you body to make the hives active. I have friend with chronic hives and she was told to take Pepcid and Allegra together to stop them and it works most days. Ask you doctor if it could work for you.

suggest a allergy test doc said for me to take pepsid ac

Maybe it is a heat rash. Or an allergy to something you are eating or drinking prior to going to bed. If it comes and goes then it is most likely a heat rash. Did you switch soaps recently or laundry detergent ? This may also be a cause for the rash. Try to think back and pin point a change that may have occured at the time you noticed the rash.

Are you sure you had this before the shot and antibiotics? The sudden onset and the generalized hives and swelling sure do sound like an allergy to the antibiotics (most likely) or the injection. The hives get worse at night because your own body's naturally produced steroids that protect you are at their lowest levels in the night. Asthmatics get worse then for example. Some Benedryl in fairly high doses and possibly a long-acting cortisone shot might help you a lot to get through this. Ask your doctor about such treatment.

There are a lot of allergens listed on the site below.
http://www.mayoclinic.com/health/hives-a...