The bottoms of both of my feet have a burning sensation.
I'm afraid there's no way to accurately answer your question online. There could be a number of different reasons you feel a burning sensation on the bottoms of your feet. You need to talk with your doctor about your symptoms. If your family doctor is not able to help you, see another doctor or ask him/her to recommend a specialist.
Many people have decreased disc joint space, facet jamming, and herniated discs (many times undiagnosed) in their lower back/spine - the result is pinching of nerves which causes referred burning pain to the soles of their feet and sometimes entire feet and lower legs (a type of peripheral neuropathic pain (PNP)) -- the treatment: NOT Rx- Lyrica nor any other drug (at least not by itself), and while TENS or Ultrasound/heat can provide temporary relief -- the real definitive, safe, inexpensive (in most places), effective periodic therapy is: DECOMPRESSION OR TRACTION TREATMENT -- when done in conjunction w/ gentle spinal manipulation and core strenghtening (basic, simple, relatively easy, guided, progressive floor-mat exercises) -- is extremely effective --AND IT CURES MY PNP TO MY FEET (along w/ the weakness and instability that develops in my lower legs and ankles-- as my case is severe and advanced w/ Spinal Degeerative Disease throughout my entire back). But, on a continuum of lower back problems stemming in most cases from wear & tear, dehydrated &/or injured discs, and mal-alignments--resulting from a life of hard work & the force of gravity & too many hours of poor posture--much of which is brought on by poorly designed poorly designed seats, furniture, car seats, shoes, hard surfaces, etc.)--it is one of the most poorly recognized pathologies (unless you go to a chiropractor periodically for a series of treatments throughout your life), horribly misunderstood, and way way under-treated conditions, and when it is treated, 9 out of 10 (probably much less) doctors do not think of (or simply do not know about) DECOMPRESSION THERAPY. By the way, it is supposed to be 100% painless, started at a low counter-pressure (50lbs for a 200 lb person) progressing slowly up (I am at 63 lbs after 1 yr of tx q 2 wks)---so, make absolutely sure the office doing your tx sessions is completely trained & certified in how to administer it properly and safely. Chiropractors are the best place to go, but many expert, experienced physical therapists know how to do this very well. Mine costs $30.00 every 2-3 weeks -- and that's very cost-effective and alot better than Methoadone (constipating, heart beats fast or irregular) or Lyrica (weight gain, drowsiness, & a toxic poison) --because as I'm sure you too well by now: living with it is hell on you and your family-- as PNP disrupts your entire life, sleep, activities, etc. GOOD LUCK, BEST WISHES, & GODSPEED W/ THAT 2 CENTS FROM ME. Spread the word, tell all your doctors, and all PNP'ers you know!!
Ms. Richards is right. The differential diagnosis for burning pain to the bottom of the feet is huge: diabetes? hypothyroidism? fallen arches? overuse, nerve impingement, vitamin/mineral deficiency, etc. You should start at your PCM's and go from there; you may need a Podiatrist or other specialist.