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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Lump Under Forearm, Blackish Yellow Comes Out After Poking, Redness Spreading, Itchy. Solution?

I felt a lump under my forearm which was really odd. I couldn t stand it so i poked it and something blackish yellow came out. Just a teeny tiny bit though. The next day I noticed the skin around where I poked became red, about 1/2 inch in size. After a couple days, the redness is spreading throughout my arm, more than an inch. What s happening?
Tue, 12 Jun 2012
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General & Family Physician 's  Response
Hi,
Thanks for writing in.
From your description, it seems you had a sebaceous cyst or a blocked hair follicle which you ruptured. This has now become infected due to which it is becoming increasingly red. I would suggest you apply neosporin powder and soframycin ointment on it. If it doesnt become ok, you would need to see your general physician for a prescription of oral antibiotics.
Hope this helps
regards
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Lump Under Forearm, Blackish Yellow Comes Out After Poking, Redness Spreading, Itchy. Solution?

Hi, Thanks for writing in. From your description, it seems you had a sebaceous cyst or a blocked hair follicle which you ruptured. This has now become infected due to which it is becoming increasingly red. I would suggest you apply neosporin powder and soframycin ointment on it. If it doesnt become ok, you would need to see your general physician for a prescription of oral antibiotics. Hope this helps regards