The meaning if your ears ring or toes hurt after a vaccine?

National Public Radio interviewed Oscar Gomez-Duarte on complaints of toe pain or ringing of the ears after a COVID-19 vaccine. Gomez-Duarte said such occurrences are rare. "So there might be a sort of cross-reaction, where those immune responses recognize proteins within the individual," he explains. "If it's in the skin, you might see a skin rash; if it's in the nervous system, there might be issues with pain, or inability to move; if it's the lung, then this individual might wheeze."