<prompt> Diagnosis of myasthenia gravis is done by using:EdrophoniumNeostigmineSuccinylcholineAtropine  <response>: Ans. A EdrophoniumRef: KDT 8the p120-121Myasthenia gravis can be differentiated from cholinergic crisis with the help of a short acting anticholinesterase agent, edrophonium. It improves the symptoms in myasthenia gravis whereas worsens the condition in cases of cholinergic crisis. Neostigmine is used for the treatment of myasthenia. 