Bird or Cats?

It looks fungal in nature - are you exposed to birds or cats? Their feces? There are several rare fungal infections that can be passed from birds and cats to people. I really don't know - shot in the dark - maybe something to go by for more research.

Here is one example of this type of fungus: (it can cause nodules and must be specifically tested for)
Cryptococcus is widespread throughout all of North America. The fungus has been isolated from several different locations including soil, fruits, and even the skin of healthy people. While it can be found almost anywhere, the primary source of exposure to people and animals is in bird excreta. Even more specifically it appears to be very closely associated with pigeon feces. The high body temperature of pigeons prevents them from becoming infected, but the fungus can pass through their GI tract and become concentrated in their feces. The high level of creatinine in pigeon feces also creates an environment that is desirable for cryptococcus and if the fungus is protected from drying or sunlight it may live for up to two years.

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