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.

Phantom limb pain starts after the part of your arm or leg is amputated. You could feel pain in the limb that has been amputated. Phantom sensations and pain occur following amputation of different body parts like the eyes,

Takayasu's arteritis is an unusual type of vasculitis, a group of disorders that causes blood vessel inflammation. In Takayasu's arteritis, the inflammation damages the big artery that carries blood from your heart to the rest of your body (aorta) and its main branches.

Bulimia nervosa is an eating disorder in which the patient eats and then purges. Purging here means vomiting out the food, taking laxatives or diuretics, and exercising excessively.