<s>[INST] I HAVE A SORE ON THE BACK OF MY NECK/HEAD THAT IS NOT BLEEDING BUT CRUSTY AND OOZING.  I THOUGHT IT WAS A SPIDER BITE OR PIMPLE AND WAS TRYING TO POP IT BUT ENDED UP WITH THIS SORE.  NOW THE OTHER SIDE OF MY NECK FEELS LIKE IT IS BRUISED BUT THE PAIN IS NOW SPREADING UP INTO MY HEAD BUT THERE IS NO BRUISE.  COULD I HAVE A STAFF INFECTION OR IS THIS SOMETHING ELSE?  IT DOES NOT LOOK LIKE RINGWORM. [/INST] Hi. I did review your concern the sore lesion on your neck could be an infection or an irritant dermatitis. Due to wearing some new necklace or ornament or shirt material or shampoo. However, to be exactly sure I would advise you to consult your dermatologist who can then look at the lesion personally, examine it and begin the treatment. If It's dermatitis, keeping the irritant away and steroid creams would help. If its infection like a boil or fur uncle or a carbuncle due to staphylococci as you suspect it would require local antibiotic cream application. Meanwhile, keep that area clean. I hope this helps Wish you a very healthy life ahead. </s>