10.22376/ijpbs.2019.10.1.p1-12 Volume 6 Issue 1 2015 (January - March) Myasthenia gravis (MG) is a rare, autoimmune neuromuscular junction disorder. Prevalence rates approach 1/5,000. MG presents with painless, fluctuating, fatigable weakness involving specific muscle groups. It occurs more common in younger individuals. Late-onset MG is more frequent in elderly men and is often misdiagnosed. We present a case of an 80 year old male presented with ocular weakness and breathlessness who was apparently normal earlier & started on betablockers as adjuvant anti hypertensive a month back. Acetylcholine receptor antibody were high indicating MG. N. ANURADHA, S.PALANIANDAVAN AND S. SAKTHI SELVAKUMAR Myasthenia gravis, Acetyl choline receptor antibodies, plasmapheresis 315-318