Are you not the one suffering from Anxiety Disorders?. If not, you need a thorough medical check up to exclude B12 Deficiency and any Neurological diseases like multiple sclerosis
and Guillain-Barré Syndrome, radiculopathy
, carpal and tarsal tunnel syndrome
. and Peripheral vascular diseases like Raynaud's phenomenon, Vericose veins of lower limbs, Embolism
, Deep vein thrombosisof lower limbsetc., and other conditions like Sjogren's syndrome, Anemia, etc., Even very cold weather may cause it.