Foot problems are many and varied, and the potential causes can be so too. Common problems include plantar fasciitis (‘policeman’s heel’), shin splints, achilles tendonitis, painful bunions, corns, calluses, aching feet or specific joints and Morton’s neuroma. These are usually associated with a particularly tight muscle(s) somewhere, a difference in the length of your legs, too much/limited movement available around a specific joint or even simply wearing footwear not suited to your feet or activities. Also, walking or running in a way which overloads or overuses a particular structure could cause it to be injured. Note that your underlying problem may actually be located elsewhere in your lower limb eg knee or hip, or even higher up in the back.