There are many reasons why patients may experience intermittent tinnitus, as follows: 1. Environmental factors: Some patients may have less obvious tinnitus symptoms during the daytime, mainly related to the background noise of their work and living environment, and when they go to sleep at night, the surrounding environment becomes relatively quiet, and the tinnitus symptoms may become more obvious. 2. Cerumen blockage or inflammatory factors: Some patients may 3. Insufficient blood supply to the microcirculation: Some patients may have insufficient blood supply to the inner ear due to exposure to noisy environments, excessive use of headphones, or various factors that may cause insufficient blood supply to the inner ear. lead to the occurrence of intermittent tinnitus symptoms.