A thunderclap headache is a severe and sudden-onset headache that reaches maximum intensity within seconds to minutes. It is characterized by its extremely painful nature and can be a sign of potentially life-threatening conditions such as subarachnoid hemorrhage, cerebral venous sinus thrombosis, or other bleeding in the brain. This type of headache requires immediate medical attention, and further investigations are usually performed to identify the underlying cause
. Thunderclap headaches are uncommon, occurring in less than 50 out of 100,000 adults each year, and can be a sign of serious medical conditions affecting the brain
. It is important to seek medical attention immediately to rule out life- threatening causes
