Symptoms and Signs of Cluster Headache
Cluster headaches begin as a severe, sudden headache, usually occurring 2 to 3 hours after falling asleep. An intense, sharp, burning and steady pain occurs on one side of the head and tends to get worse, reaching its peak within 10 minutes.
Typical Cluster headaches are associated with the following symptoms-
- Burning sensation and discomfort in one side of face and head.
- Inflammation (redness and swelling) of the one eye
- Drooping and swelling of the eyelids on the affected side.
- A smaller pupil during the attack
- Watering / Tears from the eye on the affected side

- Excessive sweating of face and temples
- A blocked or runny nose (Rhinorrhea) on the affected side of the face
- Red, flushed face on the affected side
- Light sensitivity and intolerance to bright or flashy lights.
References:
- Cluster headache - (http://www.nlm.nih.gov/medlineplus/ency/article/000786.htm)
- Cluster Headache FAQs - (http://www.emedicinehealth.com/cluster_headache_faqs/article_em.htm)
Citations
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APA
Avinash Ramani. (2014, February 24). Symptoms and Signs of Cluster Headache. Medindia. Retrieved on May 20, 2022 from https://www.medindia.net/patients/patientinfo/symptoms-and-signs-of-cluster-headache.htm.
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MLA
Avinash Ramani. "Symptoms and Signs of Cluster Headache". Medindia. May 20, 2022. <https://www.medindia.net/patients/patientinfo/symptoms-and-signs-of-cluster-headache.htm>.
Chicago
Avinash Ramani. "Symptoms and Signs of Cluster Headache". Medindia. https://www.medindia.net/patients/patientinfo/symptoms-and-signs-of-cluster-headache.htm. (accessed May 20, 2022).
Harvard
Avinash Ramani. 2021. Symptoms and Signs of Cluster Headache. Medindia, viewed May 20, 2022, https://www.medindia.net/patients/patientinfo/symptoms-and-signs-of-cluster-headache.htm.