4 Common Types of Headaches – Symptoms & Duration
There are several hundred types of headaches, but there are four very common types: sinus, tension, migraine, and cluster. Headaches are always classified as either primary or secondary. A primary headache is a headache that is not caused by another condition or sickness. Causes of primary headaches include stress, sleep deprivation, alcohol, skipped meals, fatigue, and certain processed foods. Secondary headaches are due to another condition, such as an injury, infection, or sickness, and can range from harmless to very dangerous. Read more