My husband is on long term blood thinners. Included is the itching on his back. He uses a paint roller to spread his cream on..(lol). Last few months, he has noticed a bleeding bump on his head. Its a small opening.He puts bandaids on it but the blood soaks it. Two doctors state it as either a bug bite of inflamed hair follicle. Til this day it continues. Should I be more concerned?