The patient: A 12-month-old boy in Portugal
The symptoms: Shortly after eating different types of fish, the child would develop an odor of rotting fish emanating from his body. The smell was noxious and powerful, especially around his head and hands. He was 10 months old the first time this happened. (The child had been exclusively breastfed as an infant and began eating solid foods at 7 months of age.) His mother temporarily put him on a fish-free diet, but after she reintroduced fish to his meals two months later, the odor returned.
