Possible naproxen allergy? increased bp, heart rate, intense red itch tops of feet, arms, torso. went to dr, ekg&bp normal by arrival. didn't link aleve use until today, used in frequently in past.

Allergy: You may be developing an allergy to nsaids. Depending on your symptoms now, you may need to seek medical attention immediately as such reactions can progress, especially if you are having difficulty breathing. Take Benadryl (diphenhydramine) and head to the er and avoid all nsaids.

Quite possibly: The reaction you describe certainly sounds like an allergic reaction to something you ingested , possibly the aleve (naproxen). Nonsteroidal anti-inflammatory drugs (nsaids) are fairly allergenic, and you develop an allergy to something at any point. So if the timeline to your symptoms fits with aleve (naproxen) ingestion, i would be highly suspicious. Try Benadryl (diphenhydramine) for acute relief of current symptoms.

Likely!: Yes, it is likely. You need to have your heart and kidney function checked. Good luck!