Very dizzy/ Light headed; I felt very washed out and thought I was tired/ exhausted; Lethargic; She still has a little weakness; Almost like a flare up of Hashimoto; a scalp problem, but nobody knows what it is/ Whatever she has, the vaccine aggravated it 10 times worse; a scalp problem, but nobody knows what it is/ Whatever she has, the vaccine aggravated it 10 times worse; she was feeling bad; The injection site was red, hard, kind of warm; The injection site was red, hard, kind of warm; The injection site was red, hard, kind of warm; joint pain, knees, feet, even my hands; joint pain, knees, feet, even my hands; It felt like some kind of nerve ending issue; She was also very off balance; This is a spontaneous report from a contactable consumer (patient). An 81-year-old female patient started received the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection, lot number:  EL3249), via an unspecified route of administration at left arm  on 23Jan2021at a single dose for COVID-19 immunization. Medical history included ongoing Hashimoto's disease; scalp issue; abrasions on her head like eczema; and weight loss. She was diagnosed a couple of years ago with Hashimoto. A thyroid disorder. She is not on a thyroid medication. They have just been watching it to see. She took the shot. For background, the last couple of months the patient has had abrasions on her head like eczema. She has been going to the Dermatologist for the last year. They have been trying to figure out what is going on. Concomitant medications included Phentermine for weight loss. The patient took the shot on a Saturday 23Jan2021. She did fine Sunday, but by Sunday evening on 24Jan2021, she was feeling bad. On 24Jan2021, the patient experienced injection site really red, hard and warm but didn't hurt; head broken out so bad; and joint pain. On 25Jan2021, the patient felt very dizzy/ light headed, fatigue and lethargic. As the evening went on for two to three days later from the vaccination, she experienced side effects. She got up in the middle of the night that night, and her head was broken out so bad that she couldn't comb her hair. There were least 100-150 small little bumps on her head. They almost feel like they have oil under them. They were sore and very irritated. Her scalp was blood red with inflammation. This has went on the course of 8-9 days. She also had joint pain really bad. Almost like a flare up of Hashimoto. She hasn't been having issues with it. It was like her skin was on fire. Even regular water in the shower feels like it was burning. It felt like some kind of nerve ending issue. She was also very off balance, and light headed. She never ran a fever. She was so exhausted that she couldn't get out of bed for the last 8 days. She is scheduled for the second shot.  She is scheduled for the second dose 16Feb2021.  Her doctor told her to go ahead and get the other shot, but she would like more information. She did not have a prescribing doctor. She got the vaccine at a a local hospital where she goes for testing. She could never get through to get ahold of the hospital so she tried to go through another facility. She finally got an appointment through the hospital. She was wondering if it is okay to get the second shot. She has had a scalp problem, but nobody knows what it is. They have tried to treat it with a steroid. She has seen several who don't have a clue what is could be. Whatever she has, the vaccine aggravated it 10 times worse. The joint pain was almost 100 % better since yesterday. It was mostly in her feet and knees. She was very dizzy and light headed. She wasn't falling all over the place or anything. That has improved over the last day or two. The first night, she got up to go to the bathroom, and she lost her balance but caught self. she was very careful from then on. She has fatigue as well. She still has a little weakness since the 25Jan2021. She never lost her appetite, but she felt very lethargic since the 25Jan2021. She has recovered from most of these issues, except for her head. She is in very good health except for her thyroid issue. That she has been diagnosed with for a couple of years, and the stuff in her hair. They don't know what has caused that. Every test has been negative. She thought at one point it could be the medication she was on. She was taking Phentermine to lose weight. She was wondering if it would have any recourse, but her doctor said no. She quit taking it the day before the shot just in case. She hadn't taken it again until today. The dose is 37.5mg. The way she felt at first, she felt like she had COVID. The patient stated, "I had some reaction to the (first) Pfizer covid 19 shot I took on 23Jan2021 wanted to ask if I would be able to take the 2nd shot. I took the shot fine, got home. The injection site was red, hard, kind of warm. My arm was never sore but the day after into Sunday I felt very washed out and thought I was tired. I have a thyroid issue, I've been having a scalp problem and this sometimes come with my thyroid issue. Little bumps in my scalp, they were kind of under control because of the Clobetasol propriate foam that I put in my hair and ever since then my skin is on fire. But the main thing I was exhausted, joint pain, knees, feet, even my hands. I laid around and for 5-6 days and today is the first real good day. I still have the bumps but I'm seeing a different dermatologist. I have an over active immune system Hashimoto's disease and something can set up a flare." The outcome of the events almost like a flare up of hashimoto and a scalp problem, but nobody knows what it is/ whatever she has, the vaccine aggravated it 10 times worse was not recovered; events she was feeling bad, joint pain, knees, feet, even my hands, very dizzy/ light headed, i felt very washed out and thought i was tired/ exhausted, lethargic and she still has a little weakness was recovering; events the injection site was red, hard, kind of warm was recovered in Jan2021; and outcome of the other events was unknown.