What is (are) Russell-Silver syndrome ?
Russell-Silver syndrome (RSS) is a congenital disorder that causes poor growth; low birth weight; short height; and size differences (asymmetry) of parts of the body. Other signs and symptoms may include poor appetite; low blood sugar (hypoglycemia) due to feeding difficulties; a small, triangular face with distinctive facial features; clinodactyly (curved finger); digestive system abnormalities; delayed development; and/or learning disabilities. The genetic causes of RSS are complex and relate to certain genes that control growth. Most cases are not inherited from a parent and occur sporadically. In rare cases, it may be inherited in an autosomal dominant or autosomal recessive manner.