I currently have Pityriasis Rosea. It’s a rash caused by a virus that is not contagious. I cannot wrap my head around how I’m not contagious to others, but I contracted the virus in the first place that made the rash appear. How does this work?
In: Biology
No one knows exactly what causes pityriasis rosea, although some kind of viral effect is a leading theory. If it is contagious, it has very low transmission.
It’s also possible, in general, to get an infection that is not transmissible between people. Lyme disease, for example, verbally isn’t spread person to person.
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