Tension-type headache (TTH) - also known as 'regular' or 'ordinary' headache - is extremely common. The key symptom is a tight band or pressing pain felt on both sides of the head. The headache pain in TTH is mild or moderate and lasts from several hours up to a few days. TTH usually responds well to treatment with simple over-the-counter (OTC) analgesics such as ibuprofen and paracetamol.