A Lymphocytic Variant of Hypereosinophilic Syndrome Presenting With Isolated Cutaneous Manifestations.

Hypereosinophilic syndrome (HES) is a rare disease defined by a persistent increase in eosinophilic cells associated with organ damage without any underlying cause. Three variants have been identified: myeloproliferative, lymphocytic, and idiopathic syndrome. The symptomatology is variable because it depends on the involvement of different organs, including the circulatory system, skin, lungs, digestive tract, peripheral and central nervous system, and eyes.