Myasthenia gravis is a neurological disease. It is an autoimmune disorder primarily affecting the neuromuscular junction, leading to symptoms such as pathological fatigue, ptosis, and limb weakness. Myasthenia gravis is termed as such due to its severe nature, including crises that can impair respiratory muscles, leading to respiratory paralysis, respiratory failure, and potentially death. There are three main types of myasthenic crises. The first type is myasthenic crisis, primarily caused by insufficient medication; muscular injections can be used for treatment, and if effective, it indicates a myasthenic crisis. The second type is called cholinergic crisis, resulting from an overdose of acetylcholinesterase inhibitors, with symptoms including muscular twitching and pupil constriction. The third type is called refractory crisis, occurring when the body is insensitive to medication treatments. All these crises pose a life-threatening risk to patients and require immediate management, including tracheal intubation and, if necessary, mechanical ventilation.