I have just been diagnosed with Prurigo Nodularis.A small pea sized, hard nodule just below the corner of my mouth on my face. But everywhere i go to research online states that this could be from HIV. I only have the one nodule and it was incized for biopsy this morning, and i'm pretty sure i don't have HIV. The dermatologist said do not worry, but if you look online it's like a horror movie. Could you help me with this?

Chris W.