what causes blood vessel to break in fingers
Quick Answer. Broken blood vessels in the hand are typically a result of an injury that jars the blood vessels, causing bleeding into the skin, according to Healthline. Infections of the blood, an allergic reaction, autoimmune disorders and the normal process of aging may also cause broken blood vessels. Continue Reading.
Doctors don't completely understand the cause of Raynaud's attacks, but blood vessels in the hands and feet appear to overreact to cold temperatures or stress. With Raynaud's, arteries to your fingers and toes go into vasospasm when exposed to cold or stress, narrowing your vessels and temporarily limiting blood supply.