Evaluating Dyspnea in Autoimmune Myasthenia Gravis "Why am I Short of Breath?"

Inclusion Criteria: * Age ≥18 * Confirmed diagnosis of autoimmune MG * Shortness of breath in daily life: score 1 or 2 on the respiration item on the MG- activities of daily living score * Signed consent form * Affiliated to or beneficiary of a social security scheme Exclusion Criteria: * Known Pregnancy * Known respiratory disorder (other than MG) * Recent (within past 4 weeks) respiratory infection * Current MG crisis or exacerbation (necessitating increase in MG medication \&/or hospital admission) * No dyspnea - score 0 or 3 on the respiration item on the MG- activities of daily living score * Severe cognitive impairment/guardianship