Abstract
Patients with generalized myasthenia gravis (gMG) experience functional impairment due to MG symptoms. This study aimed to assess, from the patient perspective, the symptoms, impacts, and treatment goals of individuals diagnosed with gMG. Semi-structured, in-depth concept-elicitation interviews were conducted with 28 individuals diagnosed with gMG in the United States. Participants reported gMG symptoms that affected many body regions and functions, with an average of 16 symptoms per participant. The most frequently reported symptoms were eyelid drooping (93%), physical fatigue (89%), symptoms affecting the legs (82%), difficulty breathing (82%), and difficulty holding head up (82%). Nearly all participants (96%) reported fluctuations in symptoms and severity. Participants' most bothersome symptoms were blurry/double vision (43%), breathing difficulties (36%), all-over fatigue (36%), and swallowing problems (29%). Impacts on physical functioning included an inability to participate in hobbies/sports, need for increased planning, and difficulties performing activities of daily living. All participants reported emotional impacts and impacts on their work and finances. Their treatment goals included reduced fatigue and weakness, improved symptom stability, and minimization of the impact of symptoms, in particular the emotional impact. The fluctuating and unpredictable nature of gMG symptoms was found to have a substantial impact on patients' emotional, social, and economic well-being. Participants' goals for symptom management suggest that greater focus is needed to help them quickly resume a normal lifestyle by achieving symptom stability. Impacts of fluctuating and unpredictable symptoms are difficult to measure, but it is important to consider symptom fluctuation as well as ongoing symptomatology when making treatment decisions, and to recognize the impact of uncontrolled symptoms on patients, their partners/caregivers, and family/friends. These factors are often not reflected in burden/cost-of-illness studies.
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