White is yeast indeed - candida or other yeast - Now, experiencing chronic fatigue and dermatitis is also yeast - most likely candida.
The first step in order to treat candida is to follow the diet so as to stop feeding it. Do a google search and alter your diet for a few days. The second step is to supplement with magnesium, you are magnesium deficient (perhaps vitamin E and sink would be recommended since you suffer from dermatitis . The 3rd step will be to find an antifungal to kill it - .... but if you try to kill it while feeding it, it wont work. It is important to be on the diet first and to go slowly with antifungals later on. When candida dies it cause herxheimer reaction read on the topic:
http://candidaspecialists.com/candida-die-off-symptoms/
https://www.thecandidadiet.com/candida-die-off-symptoms/



Hope this helps,

Jhan