sˈaɪmən wʌz dˌaɪəɡnˈoʊzd ɪn tˈuː θˈaʊzənd θˈɜːtiːn wɪð mˌʌltɪpəlsˈɪstəm ˈætɹəfi ˌɛmˌɛsˈeɪ, ɐ dᵻdʒˈɛnɚɹətˌɪv nˌʊɹɹəlˈɑːdʒɪkəl dɪsˈoːɹdɚ.
Simon was diagnosed in 2013 with multiple-system atrophy (MSA), a degenerative neurological disorder.