Mycoplasma and chlamydia pneumonia. Stealth infections
I didn't see any discussion here around this topic so I thought I'd start one. These two infections have been commonly found in CFS patients as a stealth like infection that the patient is not aware of. These types of pneumonia can occur as an acute infection, but can also occur as a dormant and chronic infection. From my personal experience as having had chlamydia pneumonia, I was not aware that I ever had pneumonia of any sort, and amongst several doctors I visited, none of them looked into this.
Here is a page on the ME wiki page for mycoplasma pneumonia and chlamydia pneumonia. Here is one of the best lectures on CFS. I hope I'm not breaking any rules by linking this, I'm only sharing this for general information purposes.
From my research I believe these bacteria can spread to other parts of the body from the respiratory system, such as the brain and joints, causing cognitive symptoms and joint pains just to name two I recall. Here is an article about chlamydia pneumonia and dementia. I've spoken to various people and they tell me that these infections are very nefarious, chlamydia pneumonia in particularly.
If you haven't been tested for this I believe it is worthwhile testing for. It is medicare bulk billable. The doctor in the lecture I linked above says from his experience his patients show some degree of improvement after eliminating the infection. Personally I was told I detected my chlamydia pneumonia relatively early on before it started exhibiting neurological symptoms. I was treated with a number of antibiotics over half a year. I had improvements to my brainfog, fatigue and general weakness.
Hopefully I haven't broken any rules here as providing medical advice. I just wanted to share my own research and experience in case there are others here who haven't heard about these infections.