Edrophonium test is helpful in diagnosing: (A) Marcus gunn jaw winking ptosis, (B) myasthenia gravis, (C) Blepharophismosis syndrome, (D) parkinson's
Answer is B. Ref: HL Sharma 3rd ed pg no: 142 edrophonium is very sho acting which helps in differentiating myasthenia and cholinergic crisis