Seek and ye shall find: Hodgkin's lymphoma presenting as paraneoplastic cerebellar degeneration.

Paraneoplastic neurological syndromes (PNS) are rare complications of cancer and may be the presenting sign of an occult malignancy. Diagnosis of PNS is often challenging and treatment of the underlying tumour remains the best therapeutic option for preventing further neurological damage. We report on a patient who developed a rapidly progressive cerebellar ataxia and underwent extensive investigations before a paraneoplastic aetiology was confirmed by detection of an underlying malignancy.