Although I do not have the luxury of actually examining you, I suppose tarsal tunnel cannot be ruled out because your area of tingling appears to follow the path of the medial plantar nerve which originates in the tarsal tunnel area, so any impingement of this nerve any where along its course could give you the symptoms that you are experiencing. The caveat here is if your symptoms further worsen, in which case you would want to see a foot specialist as soon as possible to prevent more severe pain. As in most medical conditions, the worse the problem gets, the more difficult it is to treat. Stand up and keep your hands against the wall at about your eye level. Keep one leg about a step behind your other leg, in such a way that one leg is straight while the other one is bent. Place the heel of the straight leg on the ground and lean forward so that you can feel a strong pull in the calves. Remain in this position for 20 - 25 seconds and repeat 4 - 5 times. 2.A complete bed rest for 24 - 48 hrs relieves back pain in most of the instances. Walk a little every few hours to keep the blood flowing and the muscles toned. Installing the pedals is easy but putting the cleats on your shoes can be difficult with the variations of adjustments available. Most cleats are adjustable front to back, side to side and rotationally for angle. If you get the set up of your cleats wrong it will put foot, ankle and knee out of alignment. Over time this can lead to pain and potential long term injury. If your knees flair out wide when pedaling, your feet are probably too close together. Move your cleats towards the inside, closer to the bike. You may also need to put a spacer on your pedal to move it out. The switch did not come without its sacrifices, however. Given that I was still adjusting to the unique demands of barefoot running, I had to cut my weekly mileage in half. This is no easy feat for a running junkie. Yet the patience required to start from scratch, in essence relearning to run, has proven beyond worth the challenge. I’ve learned more about proper biomechanics, my body’s strengths and weaknesses, and the delicate relationship between form and function, over the past ten weeks than over my entire 17 years of running. My exercise of choice for decades has been long-distance walking and hiking, as my joints always acted up if I lapsed into jogging the same distances. By "long-distance" I mean 5-7 miles a day at a fast pace, usually with walking poles, on pavement. If hiking, I wear a loaded day-pack and mostly choose unimproved trails. So my question is, now that I appear to have a chronic pain in the ball of my left foot (the right one is still pain-free) that my doc called "metatarsalgia" from overuse, why in just one foot? He just shrugged and said follow the RICE approach and take pain meds. Morton's neuroma is not always an easy diagnosis. On exam your physician may note a mass that clicks up and down between the toes. Sometimes the toes will splay apart from each other. X-rays show lack of fracture, arthritis, and are usually normal. Sometimes a diagnostic ultrasound or an MRI test may help visualize soft tissue not shown on X-ray and make sure there is no tumor present. The newest treatment option is weekly injections of dilute alcohol. The alchohol causes sclerosing and destruction of the nerve. The nerve becomes numb and the pain is relieved 80 to 90 percent of the time. It is not easy to give yourself a foot massage. After all, it is not the same as having a strong pair of hands methodically massage each joint and every sore, aching area. Try a simple tennis ball massage to soothe aching tootsies. Simply place a tennis ball on the floor, and use sore, aching feet to move the ball back and forth. Use as much pressure as desired to give the toes and the other areas of each foot an invigorating massage. It will take away the pain, at least temporarily.