This can also be called small-for gestational age (SGA) or fetal growth restriction. There are basically two different types of IUGR: Symmetric or primary IUGR is characterized by all internal organs being reduced in size. Symmetric IUGR accounts for 20% to 25% of all cases of IUGR.
Fragile X syndrome (FXS), also known as MartinâBell syndrome, or Escalante's syndrome (more commonly used in South American countries), is a genetic syndrome.
1 The Fragile X gene is only carried on an X chromosome; both males and females may transmit a Fragile X (FMR1) gene on their X chromosome so either a man or a woman may be a carrier.  The signs and symptoms of Fragile X syndrome have five general categories where individuals often show altered or arrested development.