La esquistosomiasis es una infección causada por el Schistosoma Schistosoma Schistosomiasis is an infection caused by Schistosoma, a trematode. Schistosomiasis occurs in developing countries with poor sanitation. Freshwater snails are the intermediate host and are transmitted to humans through skin contact with contaminated fresh water. The clinical presentation occurs as a result of the host's immune response to antigens from the eggs. Schistosoma/Schistosomiasis, un tremátodo. La esquistosomiasis se produce en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum los LOS Neisseria países en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum desarrollo con un saneamiento deficiente. Los LOS Neisseria caracoles de agua dulce son el huésped intermediario y se transmiten a los LOS Neisseria humanos a través del contacto de la piel con agua dulce contaminada. La presentación clínica se produce como resultado de la respuesta inmunitaria del huésped a los LOS Neisseria antígenos de los LOS Neisseria huevos. La mayoría de los LOS Neisseria pacientes son asintomáticos, pero otros pueden desarrollar una dermatitis Dermatitis Any inflammation of the skin. Atopic Dermatitis (Eczema) esquistosomática aguda, un síndrome de esquistosomiasis aguda o una esquistosomiasis crónica. El diagnóstico puede hacerse mediante la evaluación microscópica de la orina o las heces, la serología o la PCR PCR Polymerase chain reaction (PCR) is a technique that amplifies DNA fragments exponentially for analysis. The process is highly specific, allowing for the targeting of specific genomic sequences, even with minuscule sample amounts. The PCR cycles multiple times through 3 phases: denaturation of the template DNA, annealing of a specific primer to the individual DNA strands, and synthesis/elongation of new DNA molecules. Polymerase Chain Reaction (PCR). El tratamiento de la esquistosomiasis es el praziquantel Praziquantel An anthelmintic used in most schistosome and many cestode infestations. Anthelmintic Drugs.
Last updated: Dec 15, 2025

Microfotografía que muestra una agrupación de 3 especies diferentes de huevos de Schistosoma: S. japonicum, S. mansoni y S. haematobium.
Imagen: “21017” por CDC/Dr. Brodsky. Licencia: Dominio PúblicoLa transmisión se produce por el contacto de la piel con agua dulce infectada.
El Schistosoma Schistosoma Schistosomiasis is an infection caused by Schistosoma, a trematode. Schistosomiasis occurs in developing countries with poor sanitation. Freshwater snails are the intermediate host and are transmitted to humans through skin contact with contaminated fresh water. The clinical presentation occurs as a result of the host’s immune response to antigens from the eggs. Schistosoma/Schistosomiasis se encuentra en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum entornos de agua dulce en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum zonas con un mal sistema del alcantarillado.

El ciclo de vida del Schistosoma
Imagen por Lecturio.
Cercaria de Schistosoma mansoni
Imagen: “Schistosoma” por CDC/Dr. D.S. Martin. Licencia: Dominio PúblicoLa enfermedad clínica es causada por:
La mayoría de los LOS Neisseria pacientes son asintomáticos. Los LOS Neisseria individuos sintomáticos pueden presentarse de distintas maneras:
También se conoce como “prurito del nadador”:

Erupción papular debida a una dermatitis aguda por esquistosoma:
La reacción de hipersensibilidad se produce cuando la piel es penetrada por las cercarias de Schistosoma.
Se produce debido a una reacción de hipersensibilidad sistémica entre 3–8 semanas después de la infección inicial:
La presentación clínica puede variar según el número de huevos en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum los LOS Neisseria tejidos, el sitio de la infección y la respuesta inmunitaria del huésped.
Esquistosomiasis intestinal:
Esquistosomiasis hepatoesplénica:
Esquistosomiasis genitourinaria:
Neuroesquistosomiasis:
Protección personal en EN Erythema nodosum is an immune-mediated panniculitis (inflammation of the subcutaneous fat) caused by a type IV (delayed-type) hypersensitivity reaction. It commonly manifests in young women as tender, erythematous nodules on the shins. Erythema Nodosum zonas endémicas:
Estrategias de control:
| Organismo | Enterobius vermicularis Enterobius Vermicularis Enterobius/Enterobiasis | Toxocara canis Toxocara canis A species of parasitic nematode found in the intestine of dogs. Lesions in the brain, liver, eye, kidney, and lung are caused by migrating larvae. In humans, these larvae do not follow normal patterns and may produce visceral larva migrans (larva migrans, visceral). Toxocariasis | Ascaris Ascaris Ascaris is a genus of parasitic nematodes. The infection, ascariasis, is most often caused by A. lumbricoides. Transmission occurs primarily via ingestion of water or food contaminated with Ascaris eggs. Most patients with ascariasis are asymptomatic. Ascaris/Ascariasis lumbricoides | Strongyloides stercoralis Strongyloides stercoralis A species of parasitic nematode widely distributed in tropical and subtropical countries. The females and their larvae inhabit the mucosa of the intestinal tract, where they cause ulceration and diarrhea. Strongyloidiasis | Schistosoma Schistosoma Schistosomiasis is an infection caused by Schistosoma, a trematode. Schistosomiasis occurs in developing countries with poor sanitation. Freshwater snails are the intermediate host and are transmitted to humans through skin contact with contaminated fresh water. The clinical presentation occurs as a result of the host’s immune response to antigens from the eggs. Schistosoma/Schistosomiasis mansoni |
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| Características | Nemátodo | Nemátodo | Nemátodo | Nemátodo | Trematodo |
| Reservorios | Humanos | Perros | Humanos |
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| Transmisión | Fecal–oral | Fecal–oral | Fecal–oral | Contacto de la piel con suelo contaminado | Contacto de la piel con agua contaminada |
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Praziquantel Praziquantel An anthelmintic used in most schistosome and many cestode infestations. Anthelmintic Drugs |
| Prevención | Buena higiene |
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Vista microscópica de baja potencia de Enterobius vermicularis
Imagen: “Double bulb oesophagus of Enterobius vermicularis, under low power” por Kaniyarakkal V et al. Licencia: CC BY 4.0
Gusano adulto de Ascaris lumbricoides
Imagen: “An adult Ascaris lumbricoides worm” por CDC Division of Parasitic Diseases. Licencia: Dominio Público
Parásito Strongyloides stercoralis
Imagen: “Strongyloides Stercoralis in sputum” por CDC Division of Parasitic Diseases. Licencia: CC BY 4.0
Schistosoma mansonias adultos vistos bajo microscopía electrónica
Imagen: “Schistosoma mansoni, adult. [Scanning electron microscopy] of worm, unstained” por Otis Historical Archives of “National Museum of Health & Medicine”. Licencia: CC BY 2.0