Hopefully my ear is just blocked, I did have to get my ears drained once as a young child (when I guess things like that are more common) but right now Im really freaked about this new symptom I've only just found out I have. I was speaking to someone from the ME/CFS society on the phone and when I went to change arms and ears as I usually do when my arm starts to hurt, I suddenly discovered I had very bad hearing in the other ear. I switched the phone back to the other side and the other on the other end was still talking fairly loud, I switched back and forth getting the same result each time. A fairly loud normal voice, I couldn't keep the phone on my left ear as its too hard for me to hear, I had to strain to hear the voice on that side. I know my left ear was working right at least a few days ago when I had a phone to that side. I've always suspected I have severe mitochrondrial issues with the ME/CFS and I had two weird days in my childhood with what could of been a mitochrondrial issue coming in in which I suddenly found myself unable to walk further (once at 8-10yrs and once at around 14years old). My father had a hearing aid(s) as a child but hears good now as adult. (Aspergers which I have and is throu my family has also been said to be connected to mitochrondrial disorder). Anyway.. Im freaked out right now to find out Im suddenly near deaf in one ear. (I did have a very stressful day, day before court and have been crying, could that affect an ear so it no longer hears well at all?) Right now I have all kinds of thoughts running through my head due to this.. what if I wake up in the morning only to find myself completely deaf? Other then mito issues or a completely blocked ear, what else can cause one sided sudden (unless its been happening over a couple of days but I didn't notice) hearing loss? Could crying have blocked my ear???