Hypochondroplasia
What are the symptoms?
To a lesser or greater degree, the features of HCH may include:
- Short stature with an adult height in the range of 128 -151 cm (4 feet, 2 inches to 4 feet 11 inches);
- Disproportionate arms and legs with short, broad hands and feet;
- Macrocephaly (an enlarged head);
- Limitation of elbow movement;
- Lordosis (exaggerated curvature at the lower end of the spine);
- Increased joint mobility;
- Learning problems (it has not yet been determined whether this is in fact a feature of HCH).
Background
| What are the causes? 
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