Tennis champion Monica Seles reveals incurable disease as doctor shares what to know

Tennis champion Monica Seles reveals incurable disease as doctor shares what to know

Myasthenia gravis causes muscle weakness, affects breathing and movement

Monica Seles has recently spoken out about her diagnosis of myasthenia gravis. (argenx)

"My MG journey over the past five years has not been an easy one," Seles said in a press release. (argenx)

Overall symptoms range from very mild double vision and droopiness of the eyelids to difficulty with walking, breathing and swallowing. (iStock)

Certain health conditions — like COVID-19, the flu or urinary tract infections — can trigger a serious worsening of symptoms. (iStock)