Ocular myasthenia gravis and thyroid eye disease: double trouble.

A 60-year-old male patient with a previously unremarkable medical history presented with unilateral eyelid ptosis and binocular diplopia in the past year. Clinical and laboratory workup confirmed the diagnosis of ocular myasthenia gravis. In addition, further workup with orbital MRI performed due to exophthalmos and unilateral ophthalmoplegia demonstrated findings compatible with thyroid eye disease, which were further verified by antibody testing. The unusual concurrent appearance of ocular myasthenia gravis and thyroid eye disease is presented while illustrating the hallmark clinical, laboratory, and imaging findings relevant to both diseases.