Idiopathic Neuralgic Amyotrophy in Children. A Distinct Phenotype Compared to the Adult Form

Two cases of neuralgic amyotrophy (idiopathic brachial plexus neuropathy) in children are presented and combined with a review of the literature. Difficulties in establishing the diagnosis are illustrated, and we give an overview of the phenotype of childhood neuralgic amyotrophy and its distinctions from the adult type. Pain, in adult cases present in over 95 % of the cases, is less frequent in children, and its absence by no means excludes the diagnosis. In children under 8 weeks of age, the literature shows that a subsequent osteomyelitis of the shoulder or arm always seems to be involved, which warrants a close follow-up. Overall, recovery is less favourable in children, but when they fully recover they seem to do so in a shorter period of time than adults. We conclude that neuralgic amyotrophy in children is distinct from the adult variety, and that it has a definite place in the differential diagnosis of a sudden limp arm, even if it is painless.

Neuralgic amyotrophy - Brachial plexus - Children

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