Two weeks ago I went to the doctor. After hearing my description of my symptoms, the doctor confidently said I had cholinergic urticaria without giving me any test. I asked her how could you be so sure about it. She said because I had the same symptoms when I was young and now it happened again, otherwise she would give me some test to confirm.
Then I was prescribed desloratadine 5mg per tablet per day. I was told I could take one pill when I was triggered or take it in advance before activities. I did so in the first two days after getting the tablets. It worked really well. I was no longer triggered even when I was waiting in line in the supermarket (used to be triggered 100% of the time). Walking under the sun gave me mildly tickle but totally bearable.
However, the side effect is pretty strong. I felt really sleepy all day and some pain in the joint of my fingers. I am afraid that the medicine have long-term side effects, so I don’t want to take it every day.
Three days ago, I decided to go to the gym without taking desloratadine. I jumped on the track mill and began to run. Two minutes later, I could feel it in my back. By the 6 minute mark it was insufferable, but faded away by about the 12 minutes mark. After that I felt no pain or tickle.
The next day I did a little experiment and took the pill 1.5 hours before going to the gym. I jumped on the track mill with the same settings. Everything was about the same except I felt nothing until 6 minutes. Then it went 0-100 real fast.
I tried to call back the doctor, but she is on vacation. I know a little about the placebo effect, so I wonder if this is the case. The medicine is definitely useful on daily activities, but I see no difference when I go to the gym.
The doctor clearly said that I don’t have to take the pill every day. But I still could not do sports without scratching my body every 3 seconds until I past that phase.