In the September 1994 issue of the ARCHIVES, Jennum and colleagues1 reported on an association between snoring and headache.
We want to add some preliminary data from an on-going case-control study including heavy snorers and patients with obstructive sleep apnea syndrome (OSAS), both men and women, aged between 30 and 64 years.
The data were collected from consecutive patients (613 men and 129 women) referred to the sleep laboratory at Avesta (Sweden) Hospital because of suspected OSAS. Prior to admission, the patients responded to a questionnaire that included the question: Do you suffer from morning headache frequently or very frequently? The patients underwent sleep apnea screening2 and were classified as suffering from OSAS (282 men and 35 women) or from heavy snoring (331 men and 94 women).
Control subjects (298 men and 291 women) were randomly selected from the general population in the same area as the patients.
Ulfberg J. Snoring and Headache: An Important Association. Arch Neurol. 1995;52(11):1043. doi:10.1001/archneur.1995.00540350029004