Systemic Primary Carnitine Deficiency is not contagious. It is an inherited condition caused by mutations in the SLC22A5 gene, which affects the body's ability to transport carnitine. Carnitine is essential for the transport of fatty acids into the mitochondria for energy production. This deficiency can lead to symptoms such as muscle weakness, low blood sugar, and heart problems. It is important to consult with a healthcare professional for proper diagnosis and management of this condition.