Having short stature means being significantly below average in height (i.e. in the fifth percentile) compared to others of the same age and gender. It can be caused by a range of conditions such as achondroplasia (also known as dwarfism, although this is not a preferred term), osteogenesis imperfecta (OI), Noonan syndrome, and congenital hypothyroidism. However, short stature is not always caused by a medical condition - sometimes it is simply a person's inherited height. People of short stature may benefit from adaptations to their home and workplace, such as lowered light switches and strategically placed stools.