How does a sensitivity to something in your surroundings, like light, develop out of common food poisoning? Is it a biological response or something similar?
In: Biology
Most of the time, food poisoning results in gastroenteritis as a pathogen in the gut multiplies rapidly and secretes toxins that inflame the walls of our digestive system and cause the classical symptoms-nausea, diarrhea, etc) of food poisoning as the body purges them out.
However, there are some dangerous pathogens that are able to escape the digestive system and infect us directly, causing more systemic symptoms including in our nervous system.
Photosensitivity can occur when the nervous system is in a sensitized state from such an infection, causing the electrical impulses being transmitted through the optic nerves to feel unpleasant. It’s a fairly broad condition with numerous causes.
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