Tension headaches are the most common type of headache. They usually cause a mild to moderate dull, achy pain. The pain can feel like a tight band around the entire head or occur in a specific area, such as the back of the neck or the base of the skull. Accompanying symptoms may include tenderness in the scalp, neck, and shoulders, fatigue, irritability, and difficulty sleeping.
A number of factors can trigger tension headaches, including stress, insomnia, changes in sleep routine, depression, anxiety, skipping meals, poor posture, certain medications, physical inactivity, clenching or grinding teeth, or being in an uncomfortable body position for a prolonged time.
In addition, conditions affecting the muscles or joints of the neck and shoulders and hormone fluctuations related to pregnancy, menstrual periods, or menopause can trigger headaches.
Occasionally, headaches may indicate a severe medical condition such as a brain tumor or rupture of a weakened blood vessel, called an aneurysm. That's why if you are experiencing headaches, it's important to see your doctor for an evaluation.