There are several types of<unk> , (which is a subgroup of cardiovascular<unk> , the signs and symptoms depend on which type, among them are: * Erythromelalgia - a rare peripheral<unk>  where syndromes includes burning pain, increased temperature, erythema and swelling, of mainly the hands and feet are affected. thumb * Peripheral artery<unk>  – happens when atheromatous plaques build up in the arteries that supply blood to the arms and legs, plaque causes the arteries to narrow or become blocked. * Renal artery stenosis - is the narrowing of renal arteries that carry blood to the kidneys from the aorta. * Buerger's<unk>  – is due to small blood vessels that inflame and swell, vessels then narrow or are blocked by blood clots. * Raynaud's<unk>  – a rare peripheral<unk>  disorder of constriction of the peripheral blood vessels, in the fingers and toes when the person is cold. * Disseminated intravascular coagulation – a widespread activation of clotting in the smaller blood vessels. * Cerebrovascular<unk> –a group of<unk> s that affect brain function.
Vascular disease
Precancerous condition
Hematologic disease
Malignancy
Degenerative disease
Diathesis 
Nerve injury
Neuromuscular disease