Adverse events started 12/1/21 - mid morning dizziness lightheaded, continue throughout day until bedtime.  This continued same until 12/6/21.  On 12/7/21 after shower in morning began to feel extremely itchy all over back, chest and neck - all those areas were red and warm.  Took a Benadryl with not much change.  Within a few hours my palms of my hands had red blotchs warm to touch an very itchy.  Progressively got worse welts avg size from a dime to quarter - appearing on stomach/waist in belly button, back of both thighs.  Applied Cortaid to all areas.  Woke up midnight 12/8/21 extremely uncomfortable and itching in more spots on back of thighs, buttocks, groin area, chest stomach/waist, back of neck more hot red welts.  Applied Cortaid again but no relief.  After show in morning I developed a cold sore on my lip my eyelids were purplish after the shower which never happened before.  After 10 minutes my eyelids were back to normal.  The spots all over I had from previous day and night still present as red and raised and hot to touch but now more appearing.  Started putting rubbing alcohol on spots and Cortaid applied.  Not much relief and still extremely uncomforble. Palm of hand the red hot blotching spread to full palm wrists, and back of hand.  They were swellon also.  During the day of 12/8/21 it seems the spots all over my body were lightening so I thought I was turning the corner.  Then later that day more spots appeared near original areas and now all over my head in areas.  My right ear was extremly hot swellon and red. Afer a couple hours seemed to subside.  I woke up at midnight 12/9/21 half of the back of my thigh with red welts very warm to touch, and again after shower my eyelids were purplish.  Throughtout the day on 12/9/21 I had more welts appear all over some would subside in a couple hours and then more would appear in random areas.  At bedtime I developed large welts along the back of my hair line near my neck.  Woke up at midnight again 12/10/21 my left arm and hand swelled up to double the size of my right hand.  More welts on my stomach, neck on left and right side, my ears both red and hot groin area, back of thighs and the welts on back of my head more raised and hot and itchy.  After shower again my eyelids purplish.  I called my doctors office shortly after 8am and had a virtual appointment with a PA explained all that happend and showed her the pictures I took of some of the welts.  I stated after my 1st dose of Moderna I did not do well for 3 weeks I had dizziness and then I had my 2nd shot 4/16/21 4 wks from my first and once agsin had dizziness for apprx. 2 weeks.  Then explained to all that has been currently happening.  She stressed that if i had any difficulty breathing to call 911 and take ambulance to hospital.  She prescibed Zyrtec, Predisone 20mg and Famotidine 20 mg.  The welts started to subside late afternoon.  this is 12/11/ 21 and I did not wake due to any welts.  I am still getting small areas of red rash areas in random spots not nearly as uncomfortable as the welts and I apply Cortaid and they seem to subside but still get other areas every few hours at the time of this reporting.  I just hope once I finish medication the welts do not return.  I have been a promoter of the covid vaccine even with my first episode of dizziness but now with this reaction I will not attempt any worse adverse effects as ut seems my body is being affected and afraid of what could happen next.  And before I end my description I did inform my doctors office after my 1st dose of Moderna of the dizziness I had and asked thoughts of getting 2nd dose - they advised I should get 2nd dose so I did but now after the booster and this happening - I will not be seeking any additonal Moderna or any other Covid vaccine.  I will contine masking and doing all remotely and staying away from people.