Myasthenia gravis is a type of immunological disease of the nervous system that belongs to neurology. The common clinical manifestations include the following aspects. First, some patients may experience ptosis, where they cannot open their eyes. It usually starts on one side and may also involve abnormal eye movements, such as difficulty in moving the eyes to the left or right, leading to double vision and other clinical manifestations. Second, some patients may experience dysphagia, such as difficulty swallowing, choking on water, and speech articulation disorders. Third, some patients may experience weakness in their limbs, especially an inability to perform strenuous physical activities, such as climbing stairs, which can be significantly affected. These clinical manifestations usually show a pattern of being less severe in the morning and more severe in the evening.