Thank you very much for your question. I am happy to address the issues that you pose, although it is important that you recognize that my impression is based entirely on the information you have provided in your posting and is by no means a replacement for an office visit with a neurologist. Diagnosis is contingent on detailed history and physical exam and as such, the following information should be considered solely for educational purposes.
Foremost, I must be up-front by disclosing that I am not trained in the realm of alternative medicine and therefore cannot comment on the efficacy of treatments such as acupuncture or Xango mangosteen juice. However, there are a number of key elements in your history upon which I can offer some commentary. To recoup some of the main key points, you have a history of mild cognitive impairment, arachnoid cyst and shunt, multiple "mini strokes," and anticardiolipin antibody syndrome causing a hypercoaguable state . Your autoimmune inflammatory process in your lower extremities may or may not be related to your anticardiolipin antibody (? lupus).
Recently, you have begun to notice fluctuating balance and memory deficits which seem to correlate with the various homeopathic remedies you have tried. Honestly, this is likely pure coincidence, although I must caution you that there are some alternative therapies/substances which may result in spasm of blood vessels and hence increase risk for stroke. These remedies aside, you have considerable increased risk for stroke given your hypercoaguable autoimmune disease, and the waxing and waning symptoms may be reflective of changes in blood vessel caliber with-in your brain (AKA vasospasm) which can potentially result in stroke.
Because of all of the factors mentioned above, I urge you to make an appointment with a neurologist, in a particular a cerebrovascular/stroke doctor. At that time, he or she may choose to pursue further testing such as an MRI and MRA (blood vessel test) to investigate your problem further.
Again, thank you very much for your question, and I wish you the best of luck.