Associated Condition Of Myasthenia gravis ( Thyroid diseases,Diabetes )

Myasthenia gravis is associated with various autoimmune diseases, including:

1. Thyroid diseases, including Hashimoto's thyroiditis and Graves' disease
   
2. Diabetes mellitus type 1
   
3. Rheumatoid arthritis
4. Lupus, and
5. Demyelinating CNS diseases
6. Seropositive and "double-seronegative" patients often have thymoma or thymic hyperplasia. However, anti-MuSK positive patients do not have evidence of thymus pathology.