Neurobiology of the Scalp in Seborrheic Dermatitis

1 scalp biopsy will be done at the site of central sensitization testing, according to standard of care practices. First, the site will be anesthetized and within this area, 2 immediately adjacent (ie contiguous) punch biopsies will be taken-2mm \& 3mm. Both will be closed simultaneously using either (i) non fast-absorbing gut sutures, requiring a 10-14 day follow-up visit for suture removal; (ii) fast absorbing gut sutures that will not require a subsequent suture removal visit, or (iii) gel foam without stitches that also does not require a suture removal visit. Wound care instruction will be discussed with patient. The patient will be instructed to apply petroleum jelly at least 3 times per day to the biopsy site, reflecting standard of care clinical care at BMC.