That said, this post has many hallmarks of pseudoscience, and I'm afraid that the author may be invested in pseudo-scientific diagnoses to his own detriment.
For example, he is very specific about the genetic origins of his disorder and even enumerates three very specific downstream effects of his genetic polymorphisms (low catecholamine levels, 'toxin' retention, and high elimination rates of various minerals). However, any genetic disorders that are well-understood enough to detect and enumerate like this would absolutely have a name and associated diagnosis.
Furthermore, the specific factors he lists (low serotonin and dopamine, high toxin retention, high mineral elimination) map more closely to pseudoscientific principles than they do to actually medical conditions. For example, his claim that his body specifically stores 'toxins' such as benzene and mercury while 'normal' people's bodies eliminate the same toxins is a classic pseudoscientific explanation that has no basis in reality.
Again, I'm not suggesting that he isn't suffering or that his symptoms aren't actually happening. But the amount of pseudoscience in this post makes me concerned that he is moving in the wrong direction or even entering a cycle of worsening his own symptoms with his pre-occupation with pseudoscientific diagnoses and insistence that mainstream medicine can't understand his symptoms.
This is a surprisingly common scenario, common enough that it has its own diagnosis: http://en.wikipedia.org/wiki/Somatic_symptom_disorder The greatest hurdle in treating a somatic symptom disorder is convincing the patient that mental health treatment will be beneficial to their symptoms, which are largely physical. As a consequence, many sufferers turn to alternative medicine which provides comforting but largely false physical explanations for their symptoms involving disorders such as high toxin levels, low mineral levels, and low serotonin and dopamine levels, which is precisely what the author insists is causing his symptoms.