The causes for jerks can be peripheral neuropathies, vitamin
and minerals deficiencies, excess caffeine intake, hypoglycemia,
and hypothyroidism. He need to undergo blood sugar and thyroid status to rule out the cause. He may have to take vitamin B-complex supplementation.
First important step for management is treat identifiable cause. Pharmacotherapy usually involves drug modulating GABAergic neurotransmission like Levetiracetam, Piracetam, Clonazepam or Valproic acid against prescription.