Hello,
Hives are raised, red patches of skin that are usually very itchy. You may need to see your doctor if you have trouble breathing, tightness in the throat,
nausea and
vomiting, cramps or stomach pain, passing out. If you have hives more than 6 week, you will probably need to take medicines everyday to control them. First step for treatment to have to figure out if anything triggered the hives.
If so, you will need to avoid that trigger.
Benadryl can cause sleepy but I don't know what kind of
allergy to Benadryl that you have. If just concern about sleepy you may need to take it only at the night combination with Zyrtec. However, talk to your doctor if you are very concern about if it not improve you may need
steroid to help you hives symptom.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Heang Chan Raksmey, General & Family Physician