At age 6, Frida is struck with polio affecting the use of her right leg. Her leg grew very thin, and her foot was stunted in its growth. During her nine month convalescence, her father made sure that she regularly exercised the muscles in her leg and foot. Despite their efforts, her leg and foot remained deformed. Frida attempts to hide it by wearing pants, long skirts or two pairs of sock on her right foot.
(Note: Frida's medical records are very vague so it's uncertain as to whether Frida was actually afflicted with polio or a similar condition called "white tumor".)
Frida attends classes at a German elementary school, "Colegio Aleman" in Mexico City. She is cruelly nicknamed "peg-leg Frida" by her classmates.