what cause swoosh noise in head?

A swoosh noise in the head can be caused by various factors, including blood flow changes in the vessels near the ears or head, which may create a sound known as pulsatile tinnitus. Other potential causes include earwax buildup, middle ear issues, or changes in pressure, such as during altitude shifts. In some cases, stress or anxiety might also heighten awareness of internal sounds. If the noise persists or is accompanied by other symptoms, it's advisable to consult a healthcare professional.