Neurological findings in patients with pseudopapilloedema with and without verified optic disc drusen.

As part of a clinical examination of 200 patients with pseudopapilloedema with and without verified optic disc drusen, neuroophthalmological examinations were performed in 158, neurological examinations in 117 and electroencephalography in 109 patients. Headache and suspected papilloedema were the most frequent reasons for referral. Headache was one of the complaints in 102 patients. Migraine was diagnosed in 22 and suspected in 3 patients. Epilepsy was present in 9 patients and in addition, 1 patient had had treatment for convulsions in childhood. 2 patients had a pituitary tumour and 1 had a tumour in the hypothalamic region. Various other neurological disorders appeared in small numbers. Abnormalities in electroencephalograms (EEGs) were found in 36 patients. Progressive loss of central visual acuity unexplained by retinal pathology as well as bitemporal and homonymous hemianopic visual field defects and also evidence of papilloedema warrant a neurological examination in patients with optic disc drusen.