Being overweight and experiencing right knee pain after walking too much for 5days and numbness while resting(same joint) should we see a doctor?

May improve: There is a good probability that the knee symptoms will improve with rest, applications of cold alternating with warm compresses and,if the patient can take them, nsaids like ibuprofen help relieve inflammation. However if the knee is swollen,very tender,discolored, or if the symptoms don't show gradual improvement, then an orthopedic surgeon should evaluate the patient.

R knee pain: Yes. Numbness usually reflects nerve injury, May be meniscal injury, or stress fracture ( though that should hurt more w/walking), or sciatica which can refer to the knee. Have they tried aleve/ibuprofen if they can take NSAIDS? That and ice on the low back 10 minutes on 50 minute off 3-4 x a day may help.Go to ER if bowel or bladder issue/numbness) F/U w/ doc or orthopedist this week