I wanted to mention in this time of fear and anxiety with viral quarantines and such, my experience using an herb to treat acute viral infections. I have used this herb for all...
Also, generally speaking, thyroid issues can come from several different diagnosis in Chinese medicine. If Kidney Qi is the root, it can take a long time and also require nutritional and/or herbal supplements. By long time, I mean SEVERAL months, usually at least 3 for someone in your age group.
Usually in natural health circles detoxifying the liver is the last or second to last detoxifying when doing "detoxing." First, we start with the intestines. Then the kidneys. Maybe then the Liver.... and lastly, the blood.
That being said, the best way to "detox" is to stop putting toxins in the system. Since zero toxic exposure is likely impossible in this day and age, it is more about minimizing exposure to toxins. This is the first place to start and easy enough on your own. Get a good water filter. Stop eating processed foods. Eat minimal amounts of meat (3-6 oz daily) of only organic fed and pasture raised or grass fed animal products. Learn about the "Dirty Dozen" foods found to be contaminated with pesticides/herbicides. Stop eating seafood unless organically farm raised. Never eat wheat unless it is organic. Same with soy and corn products.
As for detoxifying the body... sweating, especially infrared sauna therapy, is a great way to detox (you should consult a physician to ensure this is safe for you first)... though you should always rinse off afterwards so your skin does not reabsorb toxins. Fresh organic juice fasting for short periods (to start) of 3 days is another good way to help your body. I recommend getting a masticating juicer, if you don't have one.
Fasting (for 3 days) and sauna therapy are relatively safe processes, but there are always exceptions. And you should consult a doctor before embarking on this to ensure they are safe for you by obtaining a health care professional's advice and personal evaluation of your unique condition.
I have seen much more limited positive outcomes for patients who have a bone pushing on a nerve, for instance. An example of this would be stenosis, or a narrowing of the spinal chord area, with back pain. I have gotten minimal to no results with those patients in particular. This pain is usually a burning or radiating/shooting pain. Is that what your pain is?
On patients not on pharmaceuticals, my success rate has been very high.