What are the early symptoms of myasthenia gravis in newborns?

Neonatal myasthenia is a relatively rare genetic disorder, usually caused by impaired neuromuscular transmission. In the early stages of the disease, symptoms may include ptosis (drooping eyelids), skeletal muscle weakness, facial muscle stiffness, respiratory muscle weakness, and difficulty sucking.

1. Ptosis

Due to abnormal neuromuscular junctions, the disease may present in its early stage with mild ptosis and impaired eye movement.

2. Skeletal Muscle Weakness

In the early phase of the disease, skeletal muscles become flaccid, which may manifest as poor motor ability, reduced physical activity, and general lethargy.

3. Facial Muscle Stiffness

The condition affects facial muscles, leading to facial muscle weakness, resulting in stiff facial expressions or emotional blunting, and impairing normal actions such as smiling or blinking.

4. Respiratory Muscle Weakness

When neonatal muscle weakness affects the respiratory muscles, it can lead to shallow breathing or mild respiratory distress.

5. Sucking Difficulties

Muscle weakness can also impair sucking and swallowing functions, potentially manifesting as slow feeding, feeding difficulties, and failure to gain weight over time.

Immediate medical attention is required when myasthenia is suspected. Under a doctor's guidance, medications such as neostigmine methylsulfate injection, pyridostigmine bromide tablets, or eperisone hydrochloride tablets may be used to improve neuromuscular transmission and enhance muscle strength, thereby promoting recovery. In some cases, surgical intervention may be necessary. Prompt treatment is essential to prevent delays that could compromise optimal outcomes and negatively affect growth and development.