head hurt; pain in all of her joints/couldn't move fingers; felt numb; Nauseous; felt unstable; light-headed and dizzy; Sweating; Chills; seemed to not be able to register stuff, she wouldn't necessarily say memory loss, but she couldn't put stuff together; Not hearing correctly; not wanting to eat; She was beginning to feel dehydrated; shaking; equilibrium was off; sleeping for hours; This is a spontaneous report from a contactable consumer (patient). A 76-year-old female patient received second dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection, lot number: EL9262, expiry date: 31May2021), via an unspecified route of administration on 29Jan2021 (at the age of 76 years old) at a single dose for covid-19 immunization. Medical history included pre-diabetic, thyroid (disorder), and cholesterol (abnormal). Concomitant medications included levothyroxine from unspecified date to 31Jan2021 as thyroid medication and rosuvastatin for cholesterol. The patient previously took first dose of bnt162b2 (lot number: PFREL1283, expiry date: 30Apr2021) on 08Jan2021 (at the age of 76 years old) at a single dose for covid-19 immunization and experienced Injection arm pain, a little more drowsy than normal, and more tired. On 29Jan2021, the patient experienced sleeping for hours. On 30Jan2021, the patient experienced when she woke up, she thought she was headed for the emergency room (ER) as she had pain in all of her joints. At first, it was only her fingers which lasted for five minutes or so where she couldn't move her fingers, she felt numb, she was very nauseous. she couldn't hold down food, she never threw up though, she felt unstable. If she drank water, she would immediately be going to the bathroom, she was beginning to feel dehydrated. She just couldn't hold it when she had to go to the bathroom. Then, the finger pain went to her joints in her elbows and knees. On 30Jan2021, she was also light-headed and dizzy, she was not wanting to eat, she tried to eat dry toast. She was nauseous in her stomach, but she didn't throw up. She experienced sweating and chills. On late Saturday evening of 30Jan2021, she also had an issue, a very mild case, of not hearing correctly but it was not a ringing in her ear, it was like her equilibrium was off. She ended up putting a little bit of liquid ear drops in her right ear, and that seemed to help it. Right now she feels like she has recovered from everything. When unstable, it didn't seem to last too long, she is in bed most of the time. By the time she got up to eat, she was fine. But then she lapsed into chills and shaking. The patient also experienced she seemed to not be able to register stuff, she wouldn't necessarily say memory loss, but she couldn't put stuff together (30Jan2021). She can remember stuff now and it only lasted that day. On 31Jan2021, her head hurt. Therapeutic measure was taken as a result of the event a very mild case, of not hearing correctly. Outcome of events felt unstable, light-headed and dizzy, memory impairment was recovered on 30Jan2021. Outcome of the events arthralgia, felt numb, nauseous, head hurt, sweating, chills; not hearing correctly, not wanting to eat, dehydration, shaking and equilibrium was off was recovered on 31Jan2021. Outcome of event sleeping for hours was recovering.