Monica Seles first noticed the symptoms of myasthenia gravis — a neuromuscular autoimmune disease — while she was swinging a racket the way she’d done so many times.

Tennis player Monica Seles shared that she was diagnosed with Myasthenia Gavis, a neuromuscular disease that causes muscle weakness, and detailed the symptoms that led to her seeking a doctor.

Tennis star Monica Seles opened up about her diagnosis of myasthenia gravis — a neuromuscular autoimmune disease she discussed during a recent interview with The .