I am a 24 year-old female who experienced muffled hearing a few hours ago. In the past, when I ve gotten muffled hearing, it s accompanied by fuzzy vision and is an indicator that I m about to pass out. It happened again today but without the vision impairment and actual stimuli (in my case, severe pain or hearing/seeing something graphic.) Also, when I laid down, my hearing remained muffled for about five minutes and I think my heart was beating faster than normal. I should also note that I do have a sore throat and something in my foot was stuck prior to this. When my hearing became muffled, I felt like I was going to be sick but that feeling subsided after I laid down. I feel fine now--other than the sore throat--but the whole situation just struck me as odd.