Hives; spongiatic dermatitis,Some of the bumps are still visible and itchy,red itchy bumps on my arm; itchiness was so severe that I couldn't sleep and would wake up to a bloody bedsheets from all the scratching; This spontaneous case was reported by a consumer and describes the occurrence of URTICARIA (Hives), ECZEMA (spongiatic dermatitis,Some of the bumps are still visible and itchy,red itchy bumps on my arm) and SLEEP DISORDER (itchiness was so severe that I couldn't sleep and would wake up to a bloody bedsheets from all the scratching) in a  patient of an unknown age and gender who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 vaccination.     No Medical History information was reported.   On an unknown date, the patient received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On an unknown date, received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On an unknown date, the patient experienced URTICARIA (Hives), ECZEMA (spongiatic dermatitis,Some of the bumps are still visible and itchy,red itchy bumps on my arm) and SLEEP DISORDER (itchiness was so severe that I couldn't sleep and would wake up to a bloody bedsheets from all the scratching). The patient was treated with DOXYCYCLINE ongoing since an unknown date for Adverse event, at an unspecified dose and frequency. At the time of the report, URTICARIA (Hives) and ECZEMA (spongiatic dermatitis,Some of the bumps are still visible and itchy,red itchy bumps on my arm) had not resolved and SLEEP DISORDER (itchiness was so severe that I couldn't sleep and would wake up to a bloody bedsheets from all the scratching) outcome was unknown. Not Provided    DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On an unknown date, Biopsy: spongiatic dermatitis (abnormal) spongiatic dermatitis.     For mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown), the reporter did not provide any causality assessments.   No concomitant medications were reported.  Reporter stated that about two weeks after second moderna shot patient started getting red itchy bumps on arms. Over the next couple days they were also on legs, waist and butt. They were insanely itchy and if patient would pick them they would get bloody. After two weeks of having no changes went to  primary care and prescribed with doxycycline and referred to a dermatologist. When the derm looked at patient skin, first thought patient have pleva, which was a rare skin condition .Dermatologist did a biopsy and the results revealed patient had spongiatic dermatitis caused by the vaccine. patient started noticing a slight improvement after one week of taking doxy. Once patient was done with the course, which took three weeks, most of the bumps were gone and just had some residual marks. Overall the whole process took about two months and have to say that doxy was a lifesaver - the itchiness was so severe that patient couldn't sleep and would wake up to a bloody bedsheets from all the scratching. Some of the bumps are still visible and itchy from time to time so my doctor prescribed with another three weeks of doxy. Patient didn't have any side effects from it so decided to take it to make sure it all goes away for good.