What is the classic presentation of subarachnoid hemorrhage?

The classic presentation of subarachnoid hemorrhage is characterized by a sudden and severe headache, often described by patients as a "thunderclap" headache or "worst headache of my life." This type of headache can occur without warning and is usually intense, leading patients to seek immediate medical attention. The abrupt nature of the onset is a critical aspect that distinguishes it from other types of headaches.

Recognizing this presentation is vital as subarachnoid hemorrhage can indicate a ruptured aneurysm or other vascular malformations, which require prompt diagnosis and management to prevent further complications, such as rebleeding or vasospasm.

In contrast, options describing progressive headaches or gradual headaches with dizziness imply a more chronic situation, which is not typical for subarachnoid hemorrhage. Migraine-like symptoms might include aura or throbbing pain but lack the defining suddenness and severity characteristic of a subarachnoid event. Thus, the description of the headache type is essential for accurate recognition and intervention in cases of subarachnoid hemorrhage.