most helpful answer no an ingrown toenail will not cause diarrhea. there are no rules in medicine that states that a person can only have one medical problem at a time or that all symtpoms have to be connect to just one condition. so the diarrhea is due to "something else". if you are taking antibiotics for your ingrown nail then that can cause diarrhea.
can an infected ingrown toenail cause diarrhea? i've had it off and on for 2 days. i feel fine after using the restroom. i have had an ingrown toenail that i believe to now be infected for a few days. i am going to see a doctor tomorrow. my diarrhea started yesterday in the morning where i had a bad stomach ache. after using the restroom i felt like nothing happened i was totally fine. about 12 hours later i felt the same problem a bad stomach ache. again after using the restroom i was fine. today it's happened twice in a closer time period about 5 hours. could it be this infection or maybe something i ate?