MUSK and Fatigable weakness: These findings agree with previous reports that ocular symptoms are the most common presentation in myasthenic patients, with rapid progression to bulbar involvement in MuSK-Abs MG patients.22, 23The initial manifestation of myasthenia with cervical weakness differed between groups (p = 0.05), being more associated with MuSK-Abs MG than with AChR-Abs MG.