Solar Elastotic Band: An Uncommon Reaction Pattern on Marked Sun-Damaged Skin That Shares Features With Keratoelastoidosis Marginalis

Solar elastotic bands (Raimer's bands) represent a rare clinical variant of severe solar elastosis that often affects forearms. Solar elastotic bands and keratoelastoidosis marginalis are associated with extensive chronic sun exposure (actinic damage). Repetitive trauma is also suspected of playing a causative role. We present a case of solar elastotic band of the forearm in which cytokeratin AE1/AE3 stains reveal positive staining in the dermis. This finding supports the hypothesis that trauma plays a role. We explore and review the histologic and clinical findings of several forms of solar elastosis, suggesting that these entities share many features in common.