inclusion criteria: history of sars-cov-2 pcr+ at least 2 months prior to study entry; sars-cov-2 negative (pcr) at study entry; persistent cognitive difficulties (esp. "brain fog") that began around the time of the acute covid-19; at least two neurological and/or physical symptoms that started with covid-19 infection and are ongoing at study entry, including fatigue, weakness, headache, loss of smell, tingling/numbness, shortness of breath, loss of appetite, palpitations/tachycardia, hair loss, musculoskeletal and/or chest pain; willing and able to consent, complete all assessment and study procedures; not pregnant or lactating.

inclusion criteria: history of sars-cov-2 pcr+ at least 2 months prior to study entry; sars-cov-2 negative (pcr) at study entry; persistent cognitive difficulties (esp. "brain fog") that began around the time of the acute covid-19; at least two neurological and/or physical symptoms that started with covid-19 infection and are ongoing at study entry, including fatigue, weakness, headache, loss of smell, tingling/numbness, shortness of breath, loss of appetite, palpitations/tachycardia, hair loss, musculoskeletal and/or chest pain; willing and able to consent, complete all assessment and study procedures; not pregnant or lactating.

inclusion criteria: - history of sars-cov-2 pcr+ at least 2 months prior to study entry; - sars-cov-2 negative (pcr) at study entry; - persistent cognitive difficulties (esp. "brain fog") that began around the time of the acute covid-19; - at least two neurological and/or physical symptoms that started at covid-19 infection and are ongoing at study entry, including fatigue, weakness, headache, loss of smell, tingling/numbness, shortness of breath, loss of appetite, palpitations/tachycardia, hair loss, musculoskeletal and/or chest pain; - willing and able to consent, complete all assessment and study procedures; - not pregnant or lactating.

inclusion criteria: - history of sars-cov-2 pcr+ at least 2 months prior to study entry; - sars-cov-2 negative (pcr) at study entry; - persistent cognitive difficulties (esp. "brain fog") that began around the time of the acute covid-19; - at least two neurological and/or physical symptoms that started at covid-19 infection and are ongoing at study entry, including fatigue, weakness, headache, loss of smell, tingling/numbness, shortness of breath, loss of appetite, palpitations/tachycardia, hair loss, musculoskeletal and/or chest pain; - willing and able to consent, complete all assessment and study procedures; - not pregnant or lactating.