Thanks for using the forum. I am happy to address your questions, and my answer will be based on the information you provided here. Please make sure you recognize that this forum is for educational purposes only, and it does not substitute for a formal office visit with a doctor.
Without the ability to examine and obtain a history, I can not tell you what the exact cause of the symptoms is. However I will try to provide you with some useful information.
You have a constellation of symptoms that is difficult to classify into one diagnosis based on the information you provided. If the symptoms are worse in the hands and feet, this can be caused by a process called a neuropathy. There are 2 types of nerves that provide sensation to the feet, large nerves and small nerves. A problem with either of these could lead to burning and tingling. There are many many causes to this group of disorders called "neuropathies". They include but are not limited to most commonly diabetes, vitamin deficiencies, autoimmune disorders such as lupus or a disease called Sjogren's, certain types of neoplasm, and certain toxins (such as lead). As I mentioned, there are several other genetic, metabolic, and hereditary disorders that cause neuropathy, and what tests need to be ordered depend on the history and physical examination of the patient. With small fiber neuropathy, the EMG/NCS test which measures how nerves conduct electricity and how muscles respond to them may be normal. In large fiber neuropathy, it will be abnormal. Small fiber neuropathy can be diagnosed with a skin biopsy and with a test called a QSART.
Often these symptoms may reflect emotional/psychiatric problems related to stress (what is called somatization disorder). The latter is a true medical condition whereby instead of a patient experiencing depression or anxiety, they experience physical symptoms, and once the stress is addressed, the symptoms resolve. Fibromyalagia is another medical condition that leads to whole body pains, and is best treated with medications such as lyrica and neurontin, exercise, and physical therapy.
Regarding the MS aspect of the question, it is an inflammatory demyelinating disease that affects the central nervous system. To make the diagnosis there are specific criteria, in which objective neurologic findings are present affecting 2 or more locations in the nervous system in 2 or more episodes. In order to make this diagnosis, a detailed history and neurologic examination is required. MRI is very helpful and needed.
Lastly, post-infectious processes (such as a virus) can cause muscle aches.
These are just a few possibilities. I suggest you follow up with a neurologist at some point for a thorough workup.
Thank you for this opportunity to answer your questions, I hope you find the information I have provided useful, good luck.
Stress and emotional problems was something I've considered as over the last two years I've had a lot of problems in my family and financial life to deal with.
My Doctor felt my symptoms were less likely to be something horrendous due to their widespread and general nature.
I will see about a neurological work up to try and shed some light.
Thank you very much for your reply.