When a comprehensive investigation is incapable in explaining a particular symptom or cluster of symptoms and does not identify an organic disease these symptoms are described as functional pain disorder or syndrome.

Yes, kidney stone pain, the kind of pain that reduced big men into tears, the kind of pain that made its victims want to jump out of their skin. But what are kidney stones anyway? And why do they hurt that much?

At some point in our lives, we’ve all experienced a form of intense pain. Whether it’s from playing a sport, getting into a car accident or even having your hand slammed into a door, pain happens.

Buerger's disease is an unusual disease of the arteries and veins in the arms and legs. In Buerger's disease also known as thromboangiitis obliterans, your blood vessels become inflamed, swollen, and could become blocked with blood clots (thrombi).

Neuropathic pain is described as a shooting or burning pain caused by damage or injury to the nerves.It is majorly a chronic condition that leads to constant pain symptoms.

Congenital insensitivity to pain (CIP) is a rare condition in which a person does not have the ability to feel (and has never felt) physical pain. This is also referred to as congenital analgesia.