Waking up with a headache every morning? Doctor says the timing may reveal the real cause

Most headaches come and go without causing serious harm. They often follow a stressful day, too little sleep, dehydration, or skipping meals. A glass of water, some rest, or prescribed medication is usually enough to make them fade away.But there is one pattern that neurologists say deserves more attention. A headache that wakes someone from sleep and feels worse first thing in the morning is different from the usual stress headache. It does not automatically mean there is a brain tumour or another life-threatening condition, but it is also not something that should be brushed aside as "just another headache."Doctors say the timing of a headache often tells an important story. Just as chest pain during exercise can point doctors in a certain direction, headaches that repeatedly disturb sleep or grow more severe every morning can offer clues about what may be happening inside the body.