Abstract

Familial mediterranean fever (FMF), Hasimato’s thyroiditis (HT) ve Myastenia gravis (MG) are chronical diseases that show autoimmunity. Literature reviews indicate several cases of coexisting MG and HT and only one case coexistence of MG and FMF. We present a clinical table of a 21-year-old male patient with all three diseases. The patient admitted to the hospital with limited eye movements, difficulty in swallowing which became evident towards the end of a meal. The patient had a history of FMF. The anti-TPO and anti-TG levels of the patient had increased. The ACh Receptor antibody was in the normal range (0.01), and the anti-MuSK value was high (>12). Single fiber EMG results of the patient were compatible with myasthenia gravis. The methylprednisolone and pyridostigmine treatment led to an almost complete improvement of the symptoms. As the patient had three different autoimmune disorders at once, it was thought to be a notable case worth presenting.

Key words: Myasthenia gravis, hashimoto thyroiditis, familial mediterranean fever