Anxiety 
B vitamins deficiency ( B12 Metformin)  B6 B1 
Blood Flow test 
Blood Pressure?
Calcium  
Cholesterol 
Dental - trigeminal nerve - neuropathic pain ?
Diabetes -   trigeminal nerve - neuropathic pain ?
Drug Induced Lupus ( Seizure Meds)
Epilepsy 
Hormones
Hypocalcaemia
Hysterical/Psychiatric 
Injury 
Lyme 
M.S. 
Magnesium
Paresthesia is a peculiar sensation of numbness and tingling feeling
Partial Sensory Seizures - These seizures originate in the sensory cortex. Usually cause sharp tingling sensations in the face, arms, and legs of the opposite side.
Percutaneous stereotactic rhizotomy (PSR) for facial pain
Peripheral Artery Disease: angina, tingling numbness arms, elbow and wrist
SENSORY SEIZURE?-simple partial, change in sensation
SKIN VIRUS 
SUNCT syndrome -  Short-lasting unilateral neuralgiform headache with conjunctival injection and tearing 
Sodium  
Spinal Cord 
Stress 
Stroke/pre-stroke
T4 syndrome     upper throaic spine 4th thoracic vertebra 
Trigeminal nerve 
Trigeminal neuralgia (TN)/Neuropathic Face Pain also called tic douloureux  ( one side of face )
Tumor 
susac-syndrome  (numbness & seizures)