The diagnosis of non-accidental injury may be fairly straightforward but, as we all know, it can be fraught with difficulty. An instructive case has been reported from Birmingham (Celia Moss and colleagues. Dev Med Child Neurol 2009;51:647–50).

A 6-month-old boy presented with non-specific “unwellness” and skin lesions and after a few days developed right-sided focal seizures. Imaging showed bilateral subdural fluid collections without skull fracture. The skin lesions, on the trunk, limbs, …