. "hing's disease.Porphyria.Carcinoid.Trauma:Head injury.Epilepsy:For example, postictally.Neoplasia:Primary cerebral malignancy.Secondaries in the brain.Paraneoplastic syndromes.Others:Urinary retention.Faecal impaction.Multiple aetiology.Unknown aetiology.The most common causes are medical conditions such as infections, medications or drug withdrawal.PresentationMaking an accurate assessment relies" . . .