RESUMO
In a patient with myasthenia gravis, a life-threatening myasthenic crisis can occur, a complication of myasthenia gravis. The crisis can be triggered by, among other things, emotional stress, pain, infections and a reaction to medication. The policy for invasive dental treatment in a patient with myasthenia gravis must be aimed at preventing a crisis. Prior to the intervention, consultation with the neurologist in charge is necessary because sometimes optimisation of the medication or preventive measures are required. Treatment of a myasthenia gravis patient with amide local analgesic is possible; narcosis is also possible. Local anaesthesia (using amide local analgesic in minimal dosage) is preferred to narcosis. After the dental treatment, optimal pain management is crucial to limit the chance of a crisis.