My Father Is Getting These Little Bugs Crawl Into His

My father is getting these little bugs crawl into his skin. I have been digging them out with a needle. No one else in the family is getting them. He is 85 and on heart medication and his legs are very blotchy.
Is there something like rubbing alcohol or OP Rum to kill these beasties before they penetrate the skin.
They look like miniature ants when I put a magnifying glass on them. Can you help please?