In its classic form, it manifests as a single, hard, folded coin-shaped lesion, flesh-colored papule, nodule, or plaque that has a central groove that splits it in half (a look similar to a coffee bean).

[4] Nonetheless, there have also been reports of involvement at other locations, including the penis,[5] outer auditory canal,[6] and posterior forchette of the vulva.

[7] The lesions develop as a result of various factors, including improperly fitting eyeglass frames, the weight of the spectacles, concurrent skin diseases, and deformities in the anatomy.

The longitudinal groove, which is matched by central attenuation in the epidermis, may be filled with keratinous debris or inflammatory cells.

[4] The mainstay of treatment for acanthoma fissuratum consists of removing the persistently irritating stimuli, which typically causes the lesion to reverse.