I got my Moderna booster on November 15 and on Thanksgiving day (10 days later) my hands were very red and itchy. At first I thought it was due to hand washing too many dishes and I put on some lotion. Then I thought that I grabbed the handles of the rowing machine too hard. But, when I put on my pajamas, I noticed the marks in multiple areas of my body, where the fabric touched the skin. The issue persisted the following day and I went to urgent care. The doctor's notes read "Treating for coverage of hives. Concern you may have dermatographia". She prescribed famotidine (Pepcid 20 mg 1 tablet 2 times a day for 14 days) and predniSONE 20 mg 2 tablets every day for 5 days. Three days later I started feeling my throat closing and that scared me. I went to bed and woke up at 2:30 AM feeling it was getting worst. I tried to stay calm but at 5:00 AM I woke up my husband and told him I may need to go to the emergency room. I called my doctor and asked how I should proceed. The doctor did not want me to go to the ER, he told me since I was able to swallow water, to wait until they open the office and I could be seen. Had a throat coat tea and a few hours later my throat open up completely. My doctor told me to continue taking the medication I was prescribed and if the symptoms continue after 3 days to call her. The dermatographia continue and she got me an appointment with a dermatologist for the next day. I had tried to get an appointment but for a new patient I had to wait until 2/14/2022! The dermatologist diagnosed me with acute urticaria. Put me on 2 tabs Allegra 180 mg in the morning, 2 in the afternoon. Since I have been sleeping poorly, he also prescribed Hydroxyzine 25 mg 1-2 tabs at bedtime. A month later, I continue with the skin symptoms and have an appointment to see the dermatologist again in late January. I bought some gloves to use my rowing machine and have to use clothing that doesn't rub against my skin. I filed a report with the CDC regarding adverse reaction at vaers.hhs.gov. While this is not ideal, I am not trying to discourage anyone from taking the vaccine. I rather deal with this than being connected to a ventilator.