Dwarfism
Dwarfism is a genetic condition in which a person, animal or plant is much below the ordinary size of the species.
Of the many causes of dwarfism in humans, achondroplasia (one of over 500 skeletal dysplasia) is the most frequently diagnosed.
Approximately 1 in 40,000 children are affected, and there seems to be no gender bias.
Dwarf, little person (as opposed to big person), and short-statured are usually considered appropriate terms to refer to a person with dwarfism. Terms like midget and shrimp are usually considered offensive, politically incorrect, and outdated.