Salvador Medina / Chava
Cantinflas
Laura Villanueva
Marta Romero
Paciente ambidextro
Alberto Catalá
Suegra de neurótica
Consuelo Monteagudo
Isidro Martínez
José Chávez
Paciente viejita coqueta
Paz Villegas
Doña Lola
Ada Carrasco
Comisario del pueblo
Arturo Castro 'Bigotón'
Paciente malnutrido (uncredited)
Guillermo Bravo Sosa
Enfermera (uncredited)
Margarita Delgado
Paciente con television (uncredited)
Pedro Elviro
Paciente neurótica (uncredited)
Carmelita González
Dr. Miguel Villanueva
Miguel Ángel Álvarez
Paciente vendado (uncredited)
Ramón Valdés
Hippie en cantina (uncredited)
Alejandro Suárez
Alfonso Zayas
Hombre en cantina (uncredited)
Jorge Zamora
Señora Martínez
Prudencia Grifell
Papá de Beto
Wolf Ruvinskis
Dr. Marín
Guillermo Zetina
Dr. Pablo Montero
Tony Carbajal
Beto
Pepito Velázquez
Administrador del hospital
Carlos Riquelme
Mamá de Beto
Rosa Elena Durgel
Writer
Fernando Galiana
Director
Miguel M. Delgado
Screenplay
Original Music Composer
Raúl Lavista
Director of Photography
Rosalío Solano
Script Supervisor
Luis Gaytán
Production Manager
Fidel Pizarro
Editor
Jorge Busto
Choreographer
Constanza Hool
Sound Recordist
Javier Mateos
Additional Writing
Carlos León
Sound Editor
Raúl Portillo
Sound Effects
Gonzalo Gavira
Producer
Jacques Gelman
Assistant Director
Américo Fernández
Sound Re-Recording Mixer
Galdino R. Samperio
Hairstylist
Bertha Chiu
Makeup Artist
Ana Guerrero
Production Design
Manuel Fontanals
Sound
James L. Fields