Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Case Reports
. 2014 Oct;5(4):491-3.
doi: 10.4103/2229-5178.142517.

Follicular occlusion tetrad

Vani Vasanth  1 , Byalakere Shivanna Chandrashekar  1
Affiliations
Case Reports

Follicular occlusion tetrad

Vani Vasanth et al. Indian Dermatol Online J. 2014 Oct.

Abstract

Follicular occlusion tetrad is a symptom complex consisting of four conditions having a similar pathophysiology. It includes Hidradenitis suppurativa, acne conglobata, dissecting cellulitis of the scalp and pilonidal sinus. The exact pathogenesis of this group of disease is unknown but evidence suggests that they share the same pathological process initiated by follicular occlusion in apocrine gland bearing areas. Though each of these conditions is commonly encountered singly, follicular occlusion tetrad as a symptom complex has been rarely reported in the literature.

Keywords: Acne conglobata; Hidradenitis suppurativa; dissecting cellulitis of the scalp; follicular occlusion tetrad; pilonidal sinus.

PubMed Disclaimer

Conflict of interest statement

Conflict of Interest: None declared.

Figures

Figure 1
Figure 1
Patch of cicatricial alopecia on the occiput region of the scalp
Figure 2
Figure 2
Pustules, cysts and nodule - reminiscent of acne conglobata - on the lower half of the face
Figure 3
Figure 3
Multiple nodules, cysts and band like scars in the axillary region
Figure 4
Figure 4
Multiple nodules and pustules over the buttocks with surgical scar (done for pilonidal sinus) seen in the upper part of gluteal cleft
See this image and copyright information in PMC

References

    1. Aissele VA. In: Dictionnairede medicine, a general directory of Sciences Medicals under the theoretical report and practice. BechetJeune Z, editor. Vol. 2. Paris: 1839. pp. 1839–91.
    1. Verneuil A. Studies on tumors of the skin; after few diseases of the perspiratory glands. Arch GenMed. 1854;4:447–68.
    1. Plewig G, Kligman AM. Berlin: Springer-Verlag; 1975. Acne: Morphogenesis and Treatment; pp. 192–3.
    1. Luz Ramos M, Muñoz-Pérez MA, Pons A, Ortega M, Camacho F. Acne keloidalisnuchae and tufted hair folliculitis. Dermatology. 1997;194:71–3. - PubMed
    1. Padilha-Gonçalves A. Inflammatory tineacapitis (kerion) mimicking dissecting cellulitis. Int J Dermatol. 1992;31:66. - PubMed

Publication types