I was having kind of red and blackish thumb without having any issue in movement from last few years..i contacted few skin specialists.. one of them asked to have an X-ray and colour doppler test.. X ray was all fine. In. colour Doppler, test stated it as Low flow vascular malformation. Skin specialist did laser treatment for 4-5 times but it won't provided any good results to me. it was not growing from last many years but recently i noticed there is something on next finger near thumb. Should i contact again to skin doctor or some Vascular specialist. Please suggest as i am. concerned that it should not grow much