Message service symptoms and conditions

I have been taking Bupropion XL 150mg ("generic" Wellbutrin) once a day as a mood stabilizer everyday for exactly 2 weeks. I suddenly developed severe itching in random different areas on my body. My lower scalp, palms of my hands, and ankles were the first areas that itched but did not have any obvious marks on the skin as to what was causing it. About 3 hours later it became progressively worse and started showing tiny red raised areas in the previously stated places on my body and started to spread to my neck, wrists, mid-chest below my breasts, behind my knees, and upper thighs near the front panty lines, but even worse on my lower back.

I was becoming a bit scared and annoyed by the constant itching and the hives that were forming in those areas. I had never in my life had hives before. The bottoms of my feet were so itchy but they did not have any hives on them, they just itched! I took 2 benadryl and tried to sleep but woke up quite a bit during the night because of itching.

By morning, the hives were worse and especially on the back of my neck where it was swollen and red and I could not even bend my head back. My face was slightly swollen and my eyes were puffy as well. My right palm was so swollen and painful and I could not make a fist.

I called my doctor but he was on vacation, so I had to talk to a message service he had set up in his absence!
I went to the emergency walk-in care center near my home and was evaluated by a physician who concluded that all this was actually due to the Wellbutrin which I myself found hard to believe and wanted to deny it in my mind. He ordered me to stop taking it and prescribed all sorts of drugs to counteract the hives and itching.

I am writing this only about 9 hours after seeing the emergency physician and have had some rest and taken my prescribed medicines, Medrol ( a steroid-type drug) to treat the swelling, Hydroxyz hcl for the itching, Allegra for allergy, and Zantac for the side effects (stomach pain) of all these drugs I now have to take for a while!
The swelling has gone down a bit and itching has subsided somewhat. In conclusion I must note, that it was the pharmacy's decision to substitute the Wellbutrin my doctor had prescribed with a "generic" version (bupropion) that is still so new to the market and is still undergoing studies on human subjects. We are the guinea pigs and did not even know it.