I have two small sores on my abdomen that will not heal. I was able to extract a small black sliver . I have applied alcohol to the area 3 times per day...and it seems to be drying up, yet I continue to see more small slivers appear. I visited the dermatologist about 6 weeks ago, but at that time, I could not describe these black particles because they were not as evident, therefore he concluded at that time that it was most likely some kind of bite - and prescibed an antibiotic and a topical steriod . I intend to make another office visit this week - but do you have an additional input/experience for me to considering sharing with my dermatologist? Should I resume the antibiotic/ steroid now? Thank you.