Actually, caillou was first conceived as a young baby, who usually have very little haircaillou was first conceived as a young baby, who. He has a rare disease. It's impossible for a child to become bald naturally without first going through puberty.
In the books, caillou originally had hair, but this was changed due to the fact that it would make him unrecognizable, so the creators decided to leave him bald, leading to the urban myth that. Til that caillou didn't have cancer. I’m not sure where the cancer is at, but a side effect of chemotherapy is balding.
Then it clicked, caillou has cancer. Why does no one ever. He created invisible friends and goes on his adventures. Uncover the truth behind the “caillou cancer” myth, addressing rumors about the popular children’s character’s health status.
There's also an alleged theory going around that claims that caillou has cancer therefore his parents let him get away with everything. Fan theories claim caillou is bald because he had cancer, however, the show's website cleared things up. The question of why caillou is bald has been a long. [kaju], stylized in lowercase) is an animated educational children's television series that aired on teletoon (both english and french.
The show's creators based him on a bald toddler character from a children's book and decided not to give him hair in the show. It doesn't make sense for his parents to shave his hair, kids are brutal and a bald.