Tinea imbricata, also known as or Tokelau is a superficial fungal infection caused by Trichophyton concentricum, an anthropophilic dermatophyte. The skin lesions are characteristically concentric and lamellar plaques of scale. Tinea imbricata is a chronic and highly relapsing disease and, although no first-line treatment exists, best results are obtained with oral griseofulvin and terbinafine and a topical combination of keratolytic ointments, such as Whitfield's.
Ref: Bonifaz et al. Tinea imbricata: autosomal dominant pattern of susceptibility in a polygamous indigenous family of the Nahuatl zone in Mexico. Mycoses. 2004 Aug;47(7):288-91.