At what age does cartilage-hair hypoplasia (CHH) typically present?

Updated: Aug 06, 2019
  • Author: Alan P Knutsen, MD; Chief Editor: Harumi Jyonouchi, MD  more...
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Answer

The predominant clinical feature of cartilage-hair hypoplasia is short-limb dwarfism evident at birth. The onset of dwarfism may be detected in utero, manifesting as shortening and bowing of the femur.

The onset of increased susceptibility to recurrent infections and severity of infections is somewhat more variable in cartilage-hair hypoplasia.

In two studies, increased susceptibility to infections was reported in only 31–56% of individuals with cartilage-hair hypoplasia. [20, 19] In addition, infections may be limited to varicella and may occur in early childhood. Thus, immunodeficiency in individuals with cartilage-hair hypoplasia varies, often with limited susceptibility to infections, and many children with cartilage-hair hypoplasia may live healthy lives.

Children with cartilage-hair hypoplasia that causes SCID present in early infancy with susceptibility to overwhelming and opportunistic infections.


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