Hi welcome to the health care magic Peripheral neuropathy, vascular causes, anemia, muscle strain, electrolyte imbalance etc might be the reason For that your physical examination and neurological examination first should be done.. Investigation can be done with ESR estimation and serum electrolyte and vitamin B12 estimation... HB estimation also should be done.. Avoid smoking if having habit Take healthy and balanced diet and cause specific treatment should be given... If vascular causes suspected than colour doppler can be done for that if needed Consult physician for examination and accordingly further work up planned Take care Hope your concern solved