Development of chronic subdural haematoma: a reminder to its pathogenesiss

A patient of road traffic accident was noted to have contusions, which in due course of time resolved and he improved, but never became fully all right. He was treated conservatively. Two months later, he presented with a short history of progressive hemiparesis and difficulty in walking. He was detected to have a large chronic subdural haematoma. He was treated with burr hole evacuation with which he improved. The case is discussed and hypothesis about its evolution and progression are discussed highlighting the unpredictabillty in its development. A high index of suspicion is the only key to anticipate and diagnose this neurological chameleon