Dear Friends I'm new here. Maybe some of you had some similar experience and can help me. Currently I am trying to find out, what really caused my Tinnitus. I've written some assumptions here (A,B,C…), so please let me know, which one you think could be the real cause concerning the entire description. Tnx a lot in advance! _________ AGE: 40 TINNITUS-BEGIN: Oct. 13, 2016. Duration: almost 1 month DISEASES: Tinnitus & hyperacusis (cause unknown); I also got high blood pressure. _________ SYMPTOMS: - 24 hrs tone, also slightly audible when I'm outside in the city. Not audible while showering. - Hyperacusis was initially very strong, but after 2 weeks about 60% less (some noise in the kitchen still irritates me) - Rare pain or pressure, feeling about 2-3cm in the left ear, sometimes right - maybe 30% less concentration - Emotional condition: No panic, but with some concerns, whether this will last forever. _________ TINNITUS SOUND TYPE: A stable, non-oscillating sound, with some texture / high tones , so the overall sound is not as clean as a "Sine Wave", but rather like the water in the radiator or a fizzy tablet in the mouth. _________ TINNITUS FREQUENCIES: Not easy to identify, since probably about 3 tones are simultaneously present. But one of them is dominant (makes about 60% of the total noise) - 8000 Khz (dominant) - about 14500 Khz (metallic texture) - Probably further, unidentified high frequencies as well (metallic texture) _________ VOLUME: - On my iPhone I turn the music loud up to half of the display, in order to cover tinnitus a bit. - Left / Right: Approximately 30% louder in the left ear, with the source feeling more in the center of the head. _________ POSSIBLE CAUSES (for my case; a subjective list, the order is not relevant): A) 1 day before it occurred, I've had lot of stress & been working for 11 hours on the computer. The last 3 hours on my couch until 1 o'clock at night (with a very bad head position) B) 3-4 days before it occurred, I was testing my the guitar amplifier. It was extremely loud. Maybe it damaged my hair cells? C) 2-3 days before it occurred, I went to swimming in a pool, then I had a 5 min. walk to my car by cold weather. Maybe got some infection there? D) I got Hypertension / high blood pressure (for 1/2 year) E) Side effect? I take Olmatec, the hypertension medicine (for 1/2 year) F) Traffic Noise: Since 3 years my office is looking at the highway: 45-50 DBfs constant noise. G) Dental: No pains, but you never know. I haven't visited a dentist for years.