The clinical symptoms of poor microcirculation vary from one cause to another: 1. In a condition called Raynaud’s syndrome, for example, the patient’s fingers become very pale under the action of cold and other stimulating factors, then become blue and finally turn flushed, with symptoms of numbness and pain. This is a disease caused by intermittent spasm of small peripheral arteries and narrowing of blood vessels.2. Diabetes and smoking can also cause damage to blood vessels, resulting in poor microcirculation problems. Smoking can also lead to thrombo-occlusive vasculitis, inflammation of small and medium-sized arteries and veins in the extremities, resulting in thrombotic vascular occlusion, which causes coldness, numbness, and soreness and pain in the extremities. 3, if the body loses a lot of blood or fluid, microcirculation will also be affected, and this systemic microcirculation disorder is sometimes fatal and requires immediate treatment.