What is dwarfism?

Dwarfism is in a broad sense, failure to achieve full growth potential; may be induced by ecological factors, by genetic factors, or by endocrine factors; lack of height is only one of the resulting features.
achondroplastic d. A form caused by congenital abnormality in the process of ossification of cartilage; affected individuals have a relatively elongated trunk, short extremities, and a large head.
pituitary d. Dwarfism accompanied by sexual infantilism and decreased function of the thyroid and adrenal glands; caused by lesions of the anterior portion of the pituitary gland early in childhood.

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