Myasthenic crises are categorized into three types, all resulting from worsening conditions or improper treatment, leading to respiratory muscle weakness or paralysis and subsequent difficulty in breathing. The first type occurs due to various triggers or reduction in medication, or after the application of acetylcholinesterase inhibitors which temporarily alleviate the crisis, known as the cholinergic crisis. The second type is a result of excessive use of acetylcholinesterase inhibitors during a cholinergic crisis. Beyond respiratory difficulties, symptoms may also include signs of toxicity such as vomiting, abdominal pain, diarrhea, pupil constriction, excessive sweating, drooling, increased tracheal secretions, and potential muscle tremors, spasms, as well as anxiety, insomnia, confusion, seizures, and coma. The third type is the paradoxical crisis, where neither ceasing nor increasing medication doses alleviates the symptoms, typically occurring after long-term, high-dose medication use.