Acne inversa is a chronic inflammatory disease of the hair follicles whose characteristic features include draining sinuses, painful skin abscesses, and disfiguring scars. Manifestations typically appear after puberty. Familial acne inversa is genetically heterogeneous (summary by Wang et al., 2010). Some patients with PSENEN-associated acne inversa also exhibit reticulate hyperpigmentation consistent with Dowling-Degos disease (DDD; see 179850) (Zhou et al., 2016).
For a general phenotypic description and a discussion of genetic heterogeneity of acne inversa, see 142690. [from
OMIM]