The primary treatment for Carnosinase deficiency is dietary management. This includes avoiding foods that are high in carnosinase, such as beef, pork, and fish. It is also important to limit the intake of foods that are high in histidine, such as eggs, cheese, and nuts. Additionally, supplementation with carnosine may be beneficial in some cases. Other treatments may include physical therapy, occupational therapy, speech therapy, and medications to help manage symptoms.