Episodio – Urticaria por hipersensibilidad inmediata | USMLE Step 1

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En este episodio analizamos un caso clásico de urticaria aguda desencadenada por un antibiótico (penicilina V). Revisamos la fisiopatología central: degranulación mastocitaria mediada por IgE, aumento de permeabilidad vascular y edema del dermis superficial, además del hallazgo histológico clave: dermal edema.#USMLEStep1 #USMLEDreamers #Immunology #Dermatology #Hives #Urticaria #Hypersensitivity #PenicillinReaction

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This episode was published on December 9, 2025.

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