Strange Causes of Headaches That Have Nothing to Do With Dehydration

21. Clenching Your Jaw: The Unnoticed Tension

Many people unknowingly clench their jaw or grind their teeth at night—a condition called bruxism. This creates tension in the jaw muscles, leading to tightness in the head and neck, which can trigger persistent headaches. Bruxism is often linked to stress and anxiety, but it can also be a result of misaligned teeth or TMJ (temporomandibular joint) dysfunction. Using a nightguard, practicing jaw relaxation exercises, and avoiding excessive gum chewing can help relieve tension and prevent jaw-related headaches.

22. Your Hairstyle or Headwear

Believe it or not, that tight ponytail, bun, headband, or even a snug-fitting hat could be the source of your head pain. This is known as an external compression headache, caused by continuous pressure on the scalp or forehead nerves. The constant pulling or squeezing irritates these sensitive nerves, leading to a persistent ache. Luckily, the fix is simple: opt for looser hairstyles, take breaks from tight headwear, and choose accessories that don't put excessive pressure on your head. Relief often comes quickly once the pressure is removed.