Congenital malalignment of the great toenail, or ungual malalignment, is a rarely recognized disorder. It is characterized by lateral deviation of the longitudinal axis of the nail plate with respect to the distal phalanx, and if untreated, complications in the late teens and adulthood may arise. In this study, we have reviewed conservative and definitive treatments for this disorder.

Cutaneous lupus erythematosus is an autoimmune disease with a broad range of clinical findings. There are several methods to conduct a diagnostic approach, among these stands direct immunofluorescence, in which we can find the Lupus Band Test (LBT) consisting of a band of granular deposits of immunoglobulins and complement along the dermo-epidermal junction. It can have a high sensitivity and specificity for diagnosis in some cases, according to the biopsy site, the constituents of immunorreactants found at the dermoepidermal junction, and the morphology and intensity of the immunofluorescent band. Certain limitations of the test should be considered when interpreting the results. Although useful in diagnosis, the lupus band is not considered a pathognomonic sign of erythematous lupus. About one-third of patients with positive direct immunofluorescence on a skin biopsy do not have systemic lupus erythematosus (SLE). A positive LBT in non-lesional photoprotected skin represents a criterion with high specificity to identify patients with SLE.