Final answer:
Cluster headaches are a type of headache that is characterized by severe, unilateral pain, an altered sleep-wake cycle, and nasal congestion and drainage.
Step-by-step explanation:
Cluster headaches are a type of headache characterized by severe, unilateral pain, usually around the eye or temple. They are typically described as a sharp or piercing pain. Other expected findings of cluster headaches include:
- Client experiences an altered sleep-wake cycle: Cluster headaches often occur during sleep and can disrupt regular sleep patterns.
- Headache occurs approximately 1–8 times daily. Cluster headaches typically occur in cycles, with multiple headache attacks happening within a day.
- Nasal congestion and drainage occur: Many people with cluster headaches experience nasal congestion or a runny nose on the same side as the headache.