"Like many other autoimmune conditions, research shows that people who develop MG may have inherited genes that make them more likely to develop autoimmune conditions.
Doctors also know that people with MG are at higher risk of already having or developing other autoimmune conditions.
Worldwide, about 5 out of every 100 people have 1 or more autoimmune disorders. In people with MG, 13 to 22 out of every 100 people have a second autoimmune condition.
The autoimmune conditions that people most often have in addition to MG include:
Thyroiditis (autoimmune thyroid disease)
Lupus
Multiple sclerosis
Rheumatoid arthritis
Sjogren’s syndrome
Scleroderma
Ulcerative colitis
Addison disease
Pernicious anemia
Red cell aplasia
Sarcoidosis"
https://myasthenia-gravis.com/related-autoimmune-diseases.
Do you live with any of these conditions?