Tinnitus and dark circles under the eyes may be caused by allergic rhinitis, irregular lifestyle or endocrine system diseases. 1. Tinnitus and dark circles under the eyes may be related to allergic rhinitis, which can cause tinnitus by the Eustachian tube pathway and the middle ear, and very young children may have blue-black eyelids, which are called allergic dark circles. 2. Irregular work and rest: Long-term staying up late or excessive fatigue and other causes of blood stagnation of the skin under the eyes resulting in dark circles, tinnitus occurs after nervousness. 3. Endocrine system diseases: such as high blood pressure, heart disease, liver and kidney disease, etc. may lead to eye circulation disorders and form dark circles, and tinnitus occurs after blood circulation disorders in the ear. If tinnitus and dark circles occur at the same time, you need to go to the relevant specialties for diagnosis, and then go through a systematic examination to determine the cause of the disease and then target treatment.