Search Results for: perifolliculitis

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…gluteal cleft is another site favored for formation of a fissure in a lesion of psoriasis. Figure 3.16 Fissure. FOLLICULITIS/PERIFOLLICULITIS: An inflammatory disease in which the infiltrate of inflammatory cells is present either in or around…

Histologic Diagnosis of Inflammatory Skin Diseases

Hair Follicles

…te completely at the isthmus but continues upward for a very short distance into the isthmus. What usually is referred to as perifolliculitis really is peri-infundibulitis, affecting as it does the infundibulum mostly. At times, however, infiltrates…

Differential Diagnosis in Dermatopathology

Lichen nitidus vs. Lichen striatus

A disease of infundibulosebaceous units, especially infundibula, that may manifest itself solely as noninflammatory lesions, i.e., comedones and intact cysts, or as inflammatory lesions, i.e., papules, nodules, and pustules. The process may resolve…

Histologic Diagnosis of Inflammatory Skin Diseases

"Folliculitis" (Infundibulitis)

…Disseminate and recurrent infundibulofolliculitis. Arch Dermatol 1968;97:432–435. Hoffmann E. Cited in Ruete A. Ein Fall von Perifolliculitis capitis abscedens et suffodiens. Dermatol Z 1913;20:901. Jaworsky C, Gilliam AC. Immunopathology of the…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…of pressure on it by a plug of cornified cells, the wall no longer is able to contain contents of it, some of which are dispersed into the dermis where they induce suppurative peri-infundibulitis that progresses to granulomatous perifolliculitis

Histologic Diagnosis of Inflammatory Skin Diseases

Algorithms Predicated on “Nonspecific” Findings

…nd peri-infundibular foam cells sometimes = Fox-Fordyce disease + No other findings usually and not on a face; granulomatous perifolliculitis if the wall of the infundibulum has been breached = Keratosis pilaris (and its variant, lichen spinulosus)…

Histologic Diagnosis of Inflammatory Skin Diseases

Drug eruptions

…identify a pustular dermatitis a being of drug cause by scrutiny of findings histopathologic alone. Peri-infundibulitis and perifolliculitis A lichenoid drug eruption may have a predilection, rarely, for the infundibulum and follicle, rather than…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…able intervals 15. No spongiosis in infundibular epidermis 15. Spongiosis in infundibula often 16. No peri-infundibulitis or perifolliculitis 16. Peri-infundibulitis and perifolliculitis common 17. No eccrine adenitis 17. Eccrine adenitis sometimes…