When i am confronted with an array of vaguely defined symptoms I follow the protocol of looking for the most likely causes to the least likely causes. For instance you mentioned adrenal fatigue and candida or PTSD, and that immediately suggest to me that we need to test you for hypoglycemia, which can be treated by going on a hypoglycemic diet.
Investigate the link between most of your symptoms with hypoglycemia and I am confident that you will be able to find some reasons and treat yourself.
I am always suspicious when I hear "I have been tested for hypoglycemia and the result was negative." Most doctor do not know how to test for hypoglycemia and when they do, they usually test for diabetes type I. They are generally in denial about the existence of hypoglycemia as a separate and genuine disease. The test for diabetes is a single test. To test for hypoglycemia as distinct from diabetes is explained here. You need a Glucose tolerance test for at least 4-6 hours. It is better and cheaper to complete the questionnaires available at www.hypoglycemia.asn.au.
Hypoglycemia is also a silent disease, thus people are not aware that they may have hypoglycemia. If you have PTSD, there is a probability of about 80% that you are hypoglycemic. To ignore this is usually sending people on a path of searching for all sorts of mysterious diseases, whilst the actual treatment is right under your nose.
If you feel you has a test done for hypoglycemia and not diabetes, please give me the results of a 4-6 hour GTT.
I'm sorry that you're experiencing so many physical issues. PSTD is Post Traumatic Stress Disorder and is a physiological response/reaction to emotional or physical trauma. The most common example is the combat soldier. Other examples of individuals that might develop this crippling disorder could include: adult children of domestic violence/abuse or substance abuse; survivors of auto accidents; victims of rape or violent assault; victims of home invasion; survivors of domestic violence and/or abuse; etc.
To better understand what might be the root of PSTD, it's important for you to examine your life's experiences.
As long as we are breathing, there is "hope" that we can manage our health and emotional responses. Without any more information, it's very difficult to offer any suggestions.
My physical issues are directly related to my experiences and are PSTD-induced, rather than the other way around. A very high percentage of women who have experienced abuse (either as a child or adult) typically develop auto-immune disorders and a variety of non-specific chronic conditions. So, if you are a survivor of any type of trauma, it may be a good option to consider intensive counseling therapy to help you to manage triggers, reactions, etc.
Best wishes to you
In my career as a Nutritional Psychotherapist I have not met a PTSD patients who has overcome PTSD without treating its underlying Hypoglycemia. Sure I agree the PTSD is triggered by a traumatic event. But why do some people experience a traumatic event and recover, and others don't?
Read: Post Traumatic Stress Disorder (PTSD) and Hypoglycemia