Myasthenia Gravis News Forums Forums Healthcare and Treatments Conditions that mimic Myasthenia Gravis

  • Conditions that mimic Myasthenia Gravis

    Posted by Jodi Enders on July 10, 2023 at 5:30 am

    Myasthenia gravis symptoms can mimic many other conditions, making it difficult to correctly diagnose Myasthenia gravis (MG), especially if one is only experiencing a few characteristic symptoms. Some conditions that share similar symptoms of MG include:

    • ataxia
    • acute inflammatory demyelinating polyradiculoneuropathy (AIDP)
    • amyotrophic lateral sclerosis (ALS)
    • basilar artery thrombosis causing a brainstem infarction or ischemia
    • botulism
    • bilateral Horner syndrome
    • cavernous sinus syndromes
    • diphtheria
    • Guillain-Barré syndrome
    • Kearns-Sayre syndrome
    • lyme disease
    • Miller-Fisher syndrome
    • multiple sclerosis (MS)
    • myelogenous leukemia
    • myocardial infarction
    • Oculopharyngeal dystrophy affecting the bulbar muscles
    • progressive bulbar palsy
    • progressive external ophthalmoplegia
    • pulmonary embolism causing sudden difficulty breathing
    • pseudobulbar palsy
    • spinal cord infarction infection
    • Tolosa-Hunt syndrome
    • thyroid ophthalmopathy


    Were you misdiagnosed with any of the above before receiving a correct MG diagnosis?


    Vice versa, you could be suspected to have Myasthenia gravis, but actually have one of these other conditions, which could be very critical. This is why a correct MG diagnosis, commonly confirmed with blood tests, is essential, Having MG without a proper diagnosis can be dangerous as many drugs can potentially trigger an MG crisis,

    MikeS replied 11 months, 2 weeks ago 5 Members · 6 Replies
  • 6 Replies
  • paul spychalski

    July 13, 2023 at 11:39 am

    My first Doctor said Ataxia but didn’t do anything, the Neurologist I’m seeing now has me on Pyridostigmine and it works.

  • Michelle

    August 4, 2023 at 3:42 pm

    Ataxia is a symptim rather than an actual disease in and of itself.

    • Jodi Enders

      August 4, 2023 at 6:06 pm

      correct, this list is a combination of both diseases/illnesses and symptoms

      • paul spychalski

        August 8, 2023 at 11:33 am

        My Doctor was WRONG, it’s not Ataxia. My Neurologist said it is MG.

  • Charles Karcher

    August 9, 2023 at 2:19 pm

    My initial symptom was double vision. I was diagnosed with Fourth Nerve Palsy by my Opthamologist.

  • MikeS

    August 9, 2023 at 10:38 pm

    I’m surprised that stroke isn’t on the list. Its common manifestation, diplopia, is often the first symptom to appear (as it was in my case and someone else’s here) when MG “starts”. So of course the ER docs thought (as did I) that I was having a stroke when I showed up.

Log in to reply.