Medically reviewed by Anju Goel, MD Numbness in the fingers often results from issues involving the nerves or blood vessels ...

When signaling for a refreshment stop, the rider will close their left fist and extend their thumb ... hand facing forward ...

Tingling or numb fingers may signal deeper health issues like diabetes or nerve damage Learn the causes and when to seek help ...

The hand signal, now viral on Instagram, involves tucking your fingers over your thumb to reportedly alert someone you need help. To stream WFMY News 2 on your phone, you need the WFMY News 2 app.