Neonatal Intrahepatic Cholestasis (NICCD) is primarily found in children of 1- 2 years. With proper treatment, the disease can be curable. But there are a few citrin deficiency symptoms that make the situation go fatal because of the spreading of infection causing to liver cirrhosis. During some critical situations, the children also have to experience a liver transplant with a minimum chance of cure.
At https://citrinfoundation.org/, you can get a lot about the diseases and how you can deal with it with proper medication and dietary substitutes. The moment you find your child are suffering from growth stagnation, you must immediately visit a specialist for the treatment he/she needs for cure.