Genital herpes is a recurrent lifelong disease with no cure, caused by herpes simplex virus (HSV).
HSV-2 is usually the cause but HSV-1 may occur in up to 1/3 of new cases.
HSV-1 tends to cause fewer recurrences & milder disease than HSV-2.
The incubation period is 2 days-2 weeks after exposure.
Systolic blood pressure appears to have a strong association with aneurysmal subarachnoid haemorrhage (aSAH) but not with unruptured intracranial aneurysm (UIA), whereas current smoking and female sex are risk factors for both conditions, a study has found.