I experienced tingling in my toes day 1 on ethambutol. It progressed to painful feet where I could hardly walk on and off. The tingling sensation got worse and vibrations started running through my feet. I ended up with my big toe being numb. I had pains in my leg causing it to intermittently give way. Pains in my arms and shoulder clavicle. All in 18 days on the meds big 3. They finally stopped ethambutol but it was suggested 4 months later that maybe something else is going on because ethambutol doesn’t usually cause this until sometime after use ie months into treatment. Sorry I have to disagree. It shows we are all different. The tingling and odd vibrations are still appearing but not as bad now that I’ve stopped but I wonder if it will be permanent. This was definitely from ethambutol. Now into my 5th month of treatment.