If you’re going to have a cochlear implant surgery be sure you invest in a shower cap. You won’t be able to wash your hair for about a week….
With my first CI I was able to master the art of wearing a shower cap on half of my head while washing the other half.
I sent my audiologist an email asking if the numbness on the tip of my right ear is something I should worry about. I also asked her if there’s any chance I can wash my hair sometime soon….I like being squeaky clean 🙂
There’s something about shower caps that remind me of synchronized swimmers and those swimmers are pretty doggone impressive!
Life Is About Creating Yourself 
I had an op on my mastoid this year, and the side affects of surgery were the same as a CI. I experienced numbness on the tip of my ear, but over time, you will get sensation back in it, as I did, as the nerves start to heal.