It is for my 23 yr old son. He is experiencing his left hand (palm area) swelling and stiff, painful, and his left foot, the bottom swelling and painful. He works outside all day and wears work boots. Works construction. He is able to walk despite it, but painful. On his hand it is the meaty areas. He has not lost strength in it. No tingling.
Hello, I have studied your case and I think that pain in palm and planter region both can be different problem. I would suggest you to show it to orthopedic surgeon and get it clinically examined. It can be stress fracture or soft tissue inflammation in the planter region which is causing this. I would also suggest him to change his shoes as some time it can because of pain and swelling in the foot.  I hope this answer will be useful for you. Let me know if there is any other followup questions. Thanks