That does sound very much like Chronic Fatigue Syndrome. Believe it or not, there is a rarely diagnosed condition that is a known cause of Chronic Fatigue and every symptom associated with CFS, including the ones that you have. It's a condition called Nutcracker Syndrome (Left Renal Vein Compression Syndrome). Google
Nutcracker Syndrome and Chronic Fatigue Syndrome and there's no shortage of evidence that this condition can cause CFS. I have a very similar but lesser known condition called May-Thurner Syndrome (Left Iliac Vein Compression Syndrome) and its been causing me Chronic Fatigue and possibly Narcolepsy for the past 25 years. After I had a stent placed for May-Thurner Syndrome recently, almost overnight my Chronic Fatigue and every symptom of Narcolepsy including hypnagogic hallucinations and sleep paralysis were gone. It took about 2 months for my sleep patterns to finally get back to normal. I finally started feeling like my old self only a lot less fatigued. After some research, it turns out I'm not the only one getting "cured" of CFS by getting stents placed for these 2 conditions.
If 80% of Multiple Sclerosis patients have CFS, wouldn't it make sense that these 2 vein compression syndromes would frequently be found in MS patients? Google:
Nutcracker Syndrome and MS or
May-Thurner Syndrome and MS
I found out that some doctors are actually treating MS as multiple vein conditions (CCSVI). What I found most interesting is that doctors started discovering that Nutcracker Syndrome and May-Thurner Syndrome were frequently seen as well. Some patients reported getting almost complete relief from their MS after getting stented for these 2 conditions because they are most likely getting "cured" of CFS and all the other problems they can cause.
Here's some Symptoms that these condition can cause that most doctors are unaware of so they often go undiagnosed:
Back, Leg, Thigh And Groin Pain
Low Grade Fever
Symptoms of Fibromyalgia
There is a lot of evidence out there that these 2 condition can cause CFS. Unfortunately most doctors know very little about these conditions so you have to do your own research. A good doctor would be a vascular surgeon to get checked for these conditions. If you do have them, it's possible that you may get great relief from your symptoms from a simple stenting procedure. I know I did. Hope this may help and feel free to ask any question!