In the Santuario de Plateros you can find a unique altar with the Santo Niño de Atocha image, which is believed to have the power to heal.
Wikipedia (Spanish) http://es.wikipedia.org/wiki/Santuario_de_Plateros
Address 4 Calle del Peregrino, Plateros 99158, Mexico
Coordinates 23°13'43.774" N -102°50'26.815" E