In a patient with lichen nitidus, vesicular and hemorrhagic lesions were intermixed with typical lichenoid papules. The characteristic morphology and histology of this variant allow ready recognition. Exaggeration of the process of liquefaction degeneration of the basilar cells of the epidermis would seem to be the pathomechanism in this case.
Jetton RL, Eby CS, Freeman RG. Vesicular and Hemorrhagic Lichen Nitidus. Arch Dermatol. 1972;105(3):430-431. doi:10.1001/archderm.1972.01620060068015