A tingling or numb feeling is a condition called paresthesia. It's a sign that a nerve is irritated and sending extra signals. Think of that pins-and-needles feeling as a traffic jam in your nervous system.

When should I be worried about tingling?

Seek immediate medical care (call 911) if you, or someone you are with, experience serious symptoms, such as the sudden onset of unexplained tingling; weakness or numbness on just one side of your body; sudden severe headache; sudden loss of vision or vision changes; changes in speech such as garbled or slurred speech; ...

Does Covid cause tingling?

COVID-19 can also cause numbness and tingling in some people. It is difficult to predict who may get paresthesia following COVID.