Hypnic headache
Hypnic headache is a rare primary headache disorder that is also known as the "alarm clock headache". It is characterized by recurrent episodes of headache that occur exclusively during sleep, causing the individual to awaken.
Symptoms[edit | edit source]
The main symptom of a hypnic headache is a dull headache that wakes a person from sleep. The headache can occur on one or both sides of the head. It can last for 15 minutes to 4 hours. Other symptoms may include nausea, sensitivity to light and sound, and restlessness.
Causes[edit | edit source]
The exact cause of hypnic headaches is unknown. Some researchers believe they may be related to rapid eye movement (REM) sleep. Others believe they may be related to changes in blood flow in the brain.
Diagnosis[edit | edit source]
Diagnosis of hypnic headache is based on the patient's symptoms and medical history. A doctor may also order tests such as a CT scan or MRI to rule out other causes of the headaches.
Treatment[edit | edit source]
Treatment for hypnic headaches includes medications to prevent the headaches and to treat them when they occur. Lifestyle changes such as regular sleep patterns and avoiding caffeine may also help.
See also[edit | edit source]
References[edit | edit source]
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