Lower extremity or circumferential flaccidity is a symptom of the aqueous salt metabolism disorder of Barth syndrome, an autosomal recessive disorder whose pathogenesis is not yet clear. The clinical manifestations are diverse, and the clinical types vary. The onset of the disease is more common in adolescents, and there is no significant difference in gender or race. So, what should you pay attention to in terms of diet for lower limb or peripheral flaccid paralysis? Here is a brief introduction. Forbidden foods are 1. Eat less spicy and stimulating foods. 2, avoid eating thick food. 3, avoid eating salty food. 4, avoid eating food containing alcohol and other irritants. Desirable foods are 1, fresh vegetables and fruits contain more potassium, you can eat more watermelon, bananas, citrus, apricots, strawberries, grapefruit, grapes and other fruits; vegetables such as green vegetables, celery, onions, potatoes, beans, garlic, etc. are also rich in potassium. 2, seaweed, rich in potassium elements, such as nori per 100 grams of potassium 1640 mg, is 175 times more than sodium; kelp contains 22 times more potassium than sodium; lamb’s quarters contains 3.1 times more potassium than sodium. Therefore, nori soup, steamed fish with nori, meatballs with nori, shredded seaweed and stewed meat with seaweed are the best dishes for potassium supplement. Mung beans, adzuki beans, fava beans, black beans, lentils, as well as yellow fish, chicken, milk, cornmeal, buckwheat noodles, sunflower seeds also contain a certain amount of potassium. Drinking more tea is also beneficial, as tea is rich in potassium.