Dwarfism

Dwarfism is a condition of unusually short stature caused by genetic, hormonal, or environmental factors. It includes many distinct forms with different causes and health effects.

Short stature: Height substantially below the expected range for a person’s age and sex. Dwarfism is one set of conditions that can cause unusually short stature.
Achondroplasia: A genetic skeletal disorder that commonly causes short limbs and a relatively average-sized trunk. It is the most common skeletal dysplasia associated with disproportionate dwarfism.
Prenatal diagnosis: Medical testing during pregnancy to identify fetal conditions or characteristics. Ultrasound and genetic testing can detect some skeletal dysplasias before birth.
Little People of America: A nonprofit organization that provides support and advocacy for people with dwarfism and their families. It has helped build community networks and challenge barriers faced by people with dwarfism.
Gigantism: Excessive growth caused by growth hormone overproduction before the growth plates close. It contrasts with reduced stature caused by impaired growth.
Disproportionate dwarfism: Short stature in which some bones or body regions are smaller relative to others. Many skeletal forms of dwarfism produce distinctive limb-to-trunk proportions.
FGFR3: A gene encoding a receptor that regulates bone growth and development. Activating FGFR3 variants restrict cartilage growth in achondroplasia.
Genetic counseling: A process that explains genetic conditions, inheritance, testing options, and reproductive implications. Inheritance patterns vary across forms of dwarfism and can inform family decisions.
Billy Barty: An American actor and activist who co-founded Little People of America. His work connected public visibility with organized advocacy.
Acromegaly: A disorder caused by excess growth hormone after the growth plates have closed, enlarging certain tissues and bones. It changes bone and tissue growth without producing childhood gigantism.

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