The other night while putting a small load of laundry away, my heart started to pound hard & fast. I then became red in the face, arms, chest & legs along with small bumps like mosquito bites but about 1/8 big, 100s of them on my arms & legs. I tried to walk but became very disoriented, staggered & felt like I was going to fall. I laid down, my son gave me a Benadryl & after about an hour I felt better. I am a 58 yr old female, am prediabetic & i take Percocet & MS ccontain for severe back pain. I do not take more meds than I am prescribed. I do not work