What are secondary cluster headache symptoms?

Secondary cluster headache symptoms may include:

- Pain on one side of the head, usually around the eye or temple

- Throbbing or stabbing pain

- Pain that lasts from 15 minutes to 3 hours

- Restlessness and agitation

- Tearing of the eye

- Redness of the eye

- Stuffy or runny nose

- Nausea and vomiting

- Pale skin

- Forehead or facial sweating

- Sensitivity to light and sound

- Difficulty speaking or thinking clearly