Yes. Its bearable through a run. Up to this point, the pain had been intermittent but it has been growing more & more frequent in the last 2 weeks. Tried loosening my laces, but then my shoe flops around too much.
Of the 4 main causes of midfoot pain in runners, One can happen from tight shoes or shoes laced too tight. That is nerve entrapment. This would usually cause typical nerve symptoms, including some numbness down toward the toes, sensitivity of the skin in the area or pain radiating up into the leg. Stress fractures are another possibility. Another poster suggest the possibility of a Lisfranc fracture. You are not likely to run on this type of injury but if you have pain on the top of the foot when you walk or jump up and down on the balls of your feet this is a possibility. If there is no pain doing this I think you may be able to rule this out. The 3rd is a midtarsal fault. This comes from collapsed arches or flat feet usually. The top of the bones get crammed together and the joints can be damaged and even cause spurs and arthritis. Finally, tendonitis. If you gently place your fingers over the area of pain and actively flex and extend your toes first, then your foot, you may be able to feel some slight grinding under your fingers. Even if you can't feel the grinding, non weight bearing dorsiflexion of the foot, plantar flexion or toe flexion and extension can produce some pain. I would recommend an x-ray or CT and see an orthopedist who specializes in foot problems to rule out stress fracture or midtarsal fault.