Re: strange mystery problems, 9+ years, in 21 yr old otherwise healthy woman
Sorry to hear about all your problems...finding the root cause with such a myriad of symptoms is never easy...i can relate, but don't give up!
One suggestion i can give is to track your metabolic temperature and blood pressure, also BPM.
Get yourself a good quality digital thermometer and BP machine, and take reading for a few weeks.
Temperature is best oral, under the tongue, 3 hours after waking, 3 hours after that and a 3rd reading 3 hours after that. So daily you take 3 temp. readings. Add the 3 readings together and divide by 3. This will give you your average reading for the day.
Plot in on a graph like this:
Being a woman expect temps to vary during ovulation (they drop) and menstruation (they rise).
Doing this will give an indication of adrenal, thyroid and metabolic issues that, despite you already being tested for thyroid and adrenals, could indicate a sub-clinical imbalance of these glands. Read more on Dr Rind's site about interpreting the temperatures you get. It's an excellent site.
BP and BPM readings should be done daily, while at rest, sitting, for at least 10 mins. Take at least one reading a day. It's interesting to do a morning reading and a mid-day reading. Make a note of all readings. Do this for a few weeks to get a true gauge of your average BP.
This information, when recorded for many weeks will give a definite trend that a doctor could find useful.
Many people take one-off readings of BP and temperature and go to a doctor to be dismissed with " BP and temperature change all the time, don't worry"....but if you have a few weeks worth of anomalous readings, they can provide more insight and a doctor is less likely to be dismissive and investigate further.
Symptoms of fatigue, nausea, dizziness are common with many conditions of course, yet low BP can give these symptoms daily.
As a woman it would be wise also to get your estrogen, progesterone and testosterone levels checked...(ideally at ovulation when Estrogen and Prog. should be at their highest) Low progesterone and/or estrogen exhibit symptoms of short term memory problems, concentration issues, neurotransmitter imbalances, itchy scalp, hair loss etc etc - hormone balance is essential for many functions in the body, procreation is just a minute aspect of the 'sex' hormones in the grand scale of their functions.
Good luck on your journey, hugs! :-)