Case 174. 

Malassezial folliculitis (pityrosporum folliculitis) (39 y-o M)

　 　 　 　
　
Eruptive hair follicle lesions on the tatooed chest wall (biopsy)
 　
　 　 　 　

　

 　 The 1:500 diluted patient's own serum is reactive to small yeasts present within the abscess cavity (indirect immunoperoxidase).