<s>[INST] I feel excruciating pain in my tooth whenever I drink something cold , even it s just mineral water. The pain doesn t go away until I take a medicine (Ansaid). These days it s become so strong that even if I take a tablet, it doesn t subside completely and prevails. Sometimes my tooth starts aching even when I haven t eaten anything at all. [/INST] Hi, Pain due to cold is an early sign of nerve irritation. As you have been taking painkillers for this problem the problem has reached a chronic stage when even those do not help. If your tooth starts aching on its own and specially if you get up at night due to sudden tooth pain then these are the symptoms for infected tooth. It can be treated by root canal treatment which your dentist will confirm after taking your X-rays. For emergency relief of pain, you can put clove in your mouth on the tooth which is hurting as it will give you temporary but instant relief. I strongly recommend you to visit your dentist and get the required treatment done. Regards </s>