I have a hard lump on the back of my neck with a small black dot hole. .it kind of looks like a black head but it has a tiny open hole ..And when you squeeze it a string of dark smelly pus just keeps coming out. But it gets to a point where I can t squeeze without breaking skin but the pus is still coming out. And it never bleeds I normally stop to keep from bruising my skin.
Hi, From history it's strongly suggesting of infected Sebaceous cyst giving this lump. It might require excision of cyst with sac. Consult surgeon and get examined. Ok and take care.