Sinusitis
"I used this medicine for over 20 years for chronic sinusitis.  The recent 3x I have taken it I broke out in hives all over my body that lasted for 2 hours.  Has anyone else had a similar reaction?  Not sure how after all these years I have an allergic reaction to something.  Dr. gave me Sulfamethoxazole-TMP in lieu of Levoquin and I am scared out of my mind to take something new.  I have a 11 year history of random allergies to food and medications."