Cluster Headaches
The primary symptom of Cluster Headaches is severe pain on one side of the head, usually around or behind the eye. The pain is often described as a stabbing or burning sensation and can last anywhere from 15 minutes to three hours. During a cluster period, headaches can occur several times a day, with some individuals experiencing up to eight headaches in a single day.
Other symptoms that may occur during a cluster period include:
- Redness or swelling of the affected eye
- A drooping eyelid or a small pupil on the affected side
- Sweating or flushing of the face on the affected side
- A stuffy or runny nose on the affected side
- Restlessness or agitation
The exact pattern of symptoms can vary from person to person, and some individuals may experience additional symptoms, such as nausea or sensitivity to light or sound.
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