Pediatric spinal muscular atrophy is a congenital disease caused by genetic factors, gene mutations, etc. Symptoms include weakness of the limbs and generalized muscle atrophy. Spinal muscular atrophy is a hereditary disease caused by degeneration of motor neurons in the spinal cord and brainstem, and is inherited in an autosomal recessive pattern. 1. Etiology: The main cause is genetic defects. The most important risk factor is the presence of similar patients in the family. 2. Types: According to the age of onset of the disease, the disease is categorized into three types: infantile, juvenile, and intermediate. Among them, the infantile type is the most common. 3. Symptoms: The main symptoms include weakness of the limbs, muscle atrophy, trembling tongue, and respiratory difficulties. 4. Treatment: The main treatments are B vitamin supplementation, physical therapy, nutritional support, and ventilator-assisted ventilation. The key point and difficulty of treatment is that the disease is congenital and there is no cure for the disease. 5. Harm: Children with the disease gradually develop respiratory, swallowing and motor dysfunction, which eventually leads to severe malnutrition or respiratory distress, and is life-threatening. If your child has any of the above symptoms, it is recommended that you consult a doctor promptly for active treatment.