Katherine Poinsatte, PhD, Science writer —

A 26-year-old man in Nepal developed pulmonary sarcoidosis after a mild COVID-19 infection, per a new case report that suggests “sarcoidosis as a potential complication of COVID-19,” according to researchers. The man was initially diagnosed with post-COVID fibrosis, or thickening and scarring of lung tissue following a COVID-19 infection.

An immune cell called a type 1 innate lymphoid cell is found at much higher levels in skin granulomas, that is, clumps of immune cells, of people with sarcoidosis relative to those with non-sarcoid skin granulomas, according to research that shows high levels of the cells were also found…