Lacarrubba et al.1 and Ross et al.2 initially described dermoscopic findings related to various scalp abnormalities such as androgenetic alopecia, alopecia areata, discoid lupus erythematosus, lichen planopilaris
, psoriasis and seborrheic dermatitis.
Donovan, "Lichen planopilaris
after hair transplantation: Report of 17 cases," Dermatologic Surgery, vol.
typically presents as smooth white patches of scalp hair loss.
Reygagne, "Lichen planopilaris
: update on diagnosis and treatment," Seminars in Cutaneous Medicine and Surgery, vol.
Keywords: Dermoscopy, alopecia areata, pili bifurcati, androgenetic alopecia, telogen effluvium, lichen planopilaris
, discoid lupus erythematosus.
Among 23 patients with undiagnosed disorders, 7 had traction folliculitis/alopecia; 7 had cicatricial alopecia, 4 had seborrheic dermatitis, 3 had female pattern hair loss, 1 had lichen planopilaris
, and 1 had chemical breakage.
Single case of lichen planopilaris
enrolled in our study showed vacuolar degeneration of basal layer, melanophages in upper dermis and perivascular infiltrate on histopathological examination.
JAK inhibition also has a potential role for treating some scarring alopecias, including lichen planopilaris
and frontal fibrosing alopecia.
All the cases (100) were divided into different subgroups based on clinical variants, as well as, on the basis of anatomic distribution as involving scalp, face, neck, upper limb, lower limb and others (nail and mucosal involvement) lesions of classical lichen planus were mostly present on upper and lower extremities, while 2 of LPP had facial involvement and 2 of lichen planopilaris
had scalp involvement along with extremities and trunk involvement.
If there is polytrichia or compounding of follicles, it may be tempting to fit the punch tool over what are also sometimes called "doll's hairs." But those structures are nonspecific, end-stage features of many different cicatricial alopecias, including lichen planopilaris
, central centrifugal cicatricial alopecia, and even lupus.
Two lymphocytic cicatricial alopecias, lichen planopilaris
and frontal fibrosing alopecia (FFA), have been associated with peroxisome proliferator-activated receptor gamma (PPARG) deficiency.