Typically MICU or neuro ICU, consideration for thymectomy if not done already
Consideration for corticosteroids or other immunosuppressants (i.e. corticosteroids, azathioprine, mycophenolate mofetil, cyclosporine)
Myasthenia gravis
Antibiotics 
Polymyositis
Steroids
Lambert-Eaton myasthenic syndrome
Anticonvulsants 
Tick paralysis
Psychotropics 