Since I'm taking medications at night it's difficult to assess how long my spikes would have lasted, since the meds usually help me by the next day after a spike where it's back to its 'baseline' reactive oscillating tinnitus.
But some days are so debilitating that I become suicidal & then a day after that I can have a 'good' day where I'm not suicidal.
I don't know if this should count but the longest 'spike' would be from getting the COVID-19 vaccine, particularly the last one which was a booster shot. I don't really think this though should be considered a "spike" in real sense (hence the reason for the scare quotes) because it's more of a temporary change (the last time about a week in duration) in quality type of perception of the sound rather than perceived loudness alone.
But some days are so debilitating that I become suicidal & then a day after that I can have a 'good' day where I'm not suicidal.
I don't know if this should count but the longest 'spike' would be from getting the COVID-19 vaccine, particularly the last one which was a booster shot. I don't really think this though should be considered a "spike" in real sense (hence the reason for the scare quotes) because it's more of a temporary change (the last time about a week in duration) in quality type of perception of the sound rather than perceived loudness alone.