[header] How to know if you have a pinched nerve [title] Pay attention to muscle weakness. [step] Muscle weakness is a common symptom of a pinched nerve. Pay attention to any changes in your strength to determine if you may have a pinched nerve. 
[substeps] For example, if you have a pinched nerve in your wrist, then it may affect the function of your fingers and thumb and reduce your grip strength. [title] Look for a " pins and needles " sensation.