### Human:\nbruise that never goes away and is warm to touch what is it? . i have what looks like a bruise on my leg light purplish. however it is not a bruise it is not sore to touch and has been on my leg for several years. i recently noticed that this dark mark on my leg is significantly warm when you touch it. what could it be and should i be concerned\n\n### Assistant: in general i would say you should ask your doctor about this the next time you have an appointment. sometimes a lingering bruise can signal a health problem but that's relatively unusual - and it's usually not a single "bruise" but multiple bruises over time. and you've been living with this mark for years. there are a number of reasons why this particular spot could be warm to the touch. perhaps it's a knot of blood vessels very near the surface of the skin. that would likely be a bit warm. one thing it's probably not is a deep vein thrombosis (dvt). you can't see these (they are located below layers of muscle in the calf) though a classic symptom of dvt is a hot flushed appearance on the skin. your description doesn't match this scenario at all. whenever you're in doubt about something don't hesitate to ask your doctor. wishing you well!