Post COVID-19 Guillain Barre syndrome with syndrome of inappropriate secretion of antidiuretic hormone

Guillain Barre syndrome (GBS) is a rare but potentially fatal immune mediated disorder of peripheral nerves and nerve roots usually triggered by infections characterized ascending paralysis with or without sensory symptoms, hyporeflexia to areflexia. Usually preceded gastrointestinal respiratory infection. Post COVID-19 neurological manifestation include GBS, transverse myelitis etc., occur at varying incidence rates various places. Here we report 42-year-old lady who had recovered presented quadriparesis absent deep tendon reflexes electro-diagnostically proven AMSAN variety GBS treated successfully IVIg. Patient was having hyponatremia which diagnosed be due SIADH fluid restriction tolvaptan. This case being reported combination COVID-19, COVID vaccination shortly before inappropriate secretion antidiuretic hormone (SIADH) quite combination.