title: [Cutaneous loxoscelism mainly edematous: a case report].
abstract: In Chile, loxoscelism is caused by the bite of the Loxosceles laeta spider. The clinical presentation has two different forms: cutaneous loxoscelism (CL) and vicero-cutaneous loxoscelism, which is less frequent. Cutaneous loxoscelism includes an uncommon clinical variation (4%), called CL with edematous predominance (CLEP). We present a 5-year-old patient with sudden pain and edema on his right eyelid associated with fever, which progressed rapidly involving the right hemifacial area, frontal region, and left eyelid. Angioedema and pre-orbital cellulitis were discarded and CLEP was suspect. Cutaneous loxoscelism with an edematous predominance is self-limited, benign and with little or no necrotic injury due to the edema, which dilutes the toxin-induced enzymatic process causing necrosis. As in the reported cases it usually responds well to medical treatment and does not cause visceral involvement.
authors.forename: Paula de
authors.initials: Pd
authors.lastname: la Barra
authors.forename: Verónica
authors.initials: V
authors.lastname: Vial
authors.forename: Yenis
authors.initials: Y
authors.lastname: Labraña
authors.forename: Ana María
authors.initials: AM
authors.lastname: Álvarez
authors.forename: Helena
authors.initials: H
authors.lastname: Seguel
mesh_terms: D000818:Animals; D002675:Child, Preschool; D002677:Chile; D004487:Edema / Q000209:etiology*; D005141:Eyelid Diseases / Q000209:etiology*; D006801:Humans; D008297:Male; D012871:Skin Diseases / Q000209:etiology*; D001098:Spider Bites / Q000150:complications*; D013111:Spider Venoms / Q000506:poisoning; D013112:Spiders / Q000145:classification
chemical_list: D013111:Spider Venoms