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Hypotonia

What are the symptoms?

Hypotonic infants appear floppy. Head control may be poor causing the head to fall forwards, backwards and/or sideways in the sitting position. This is also reflected in head lag when pulling the child to sitting from lying down. Often children with hypotonia have good arm and leg movements but the range of movements at the hips, elbows and knees is excessive. Poor sucking and chewing may also be present in some hypotonic children depending on the underlying condition.

In a significant number of cases hypotonia is merely a reflection of increased joint laxity and the term 'benign hypermobility syndrome' is often used in these cases. The joint laxity and associated hypotonia tends to improve with time in the majority of children.

View Background Background  |  What are the causes? View What are the causes?

Medical text written October 2002 by Professor F Muntoni. Last updated September 2007 by Professor F Muntoni, Professor and Consultant in Paediatric Neurology, Imperial College of Science, Technology and Medicine, Hammersmith Hospital, Neuromuscular Centre, London, UK.

 

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