The average height for people with this rare condition is 142 cm in women and 150 cm in men. The condition is thought to have an incidence of between 1 in 75,000 to 1 in 100,000 people.
Silver-Russell syndrome may be caused by a genetic problem, but in many cases the exact cause is unknown.
Signs and Symptoms
- Small at birth.
- Slender (almost fragile) stature.
- Crooked spine.
- Asymmetrical limbs: the arm and leg on one side of the body are longer than the arm and leg on the other side.
- Little fingers are bent inward.
- Large head: head is relatively large compared to the rest of the body.
- Triangular face with a large forehead and a small mouth and lower jaw.
- Low set ears.
- Feeding problems: in the first year the main problem is that babies spit out or bring their milk back up (reflux).
- Low blood sugar (hypoglycemia) – which makes the child low in energy and causes other problems such as fainting.
- Slower development of fine and gross motor skills.
- Slower speech development.
- Learning problems: even though intelligence is normal, children may have problems learning.
Children with Silver-Russell syndrome may be treated with enteral feeding, which may be needed together with growth hormone.