Your symptoms can be chronic fatigue syndrome. It is manifested as following;
1) state of chronic fatigue that persists for more than 6 months,
2) no clear cause, and
3) accompanied varied intensity of cognitive difficulties.
You may discuss this with your doctor. Meanwhile following investigations should be done if not already performed:
1) Complete blood count,
2) Erythrocyte sedimentation rate,
3) Thyroid function tests,
4) Muscle enzymes;
5) Anti-nuclear antibodies (ANA)
6) Adrenal function test
9) Anti-SSA (Ro) or Anti-SSB (La)
10) Coombs test
12) MRI of the brain
13 EBV virus
14) Comprehensive metabolic panel
15) Sleep studies in a sleep clinic.
The other diagnostic considerations would be;
a) Chronic anemia
b) Thyroid issue
c) Adrenal problem (Addison disease)
d) Sleep apnea
All these can be concomitant to chronic fatigue syndrome.
Any chronic physical disorder will cause mental symptoms like anxiety. In long term these may intermingle too much and physical issues may be masked, causing difficulty for clinician to diagnose and on surface only anxiety may be perceived.
Please feel free for your follow up questions.
I would be happy to assist you further, if you need any more information.
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