Pulsatile tinnitus causes
While standard tinnitus often lacks a clear cause, pulsatile tinnitus tends to have identifiable factors, though pinpointing them can be challenging. This condition is often linked to changes in blood flow through vessels near the ear, typically occurring unilaterally (in one ear).
This change can happen for a number of reasons, including:
- An increase in the blood flow around your body - This can happen as a result of pregnancy, exercise, some medications or anaemia (a severe iron deficiency).
- Irregularly shaped blood vessels - Blood vessels with irregular shapes can encourage your blood to flow vfaster, which makes more noise than slow-flowing blood.
- Artery blockages - Atherosclerosis is a condition that causes fatty deposits to clog up your arteries, meaning your blood will not be able to easily flow through them.
Your awareness of the blood flowing in and around your ears can be caused by conditions that can block your ears, meaning your internal sounds are amplified. These include a perforated eardrum and impacted earwax.
Other common causes of pulsatile tinnitus include:
- High blood pressure
- Hyperthyroidism – when the thyroid gland is overactive
- Blockage in your arteries
- Altered awareness – brought on by factors such as conductive hearing loss
- Head or neck tumours
You may also have symptoms of pulsatile tinnitus if you suffer from a condition that leads to increased pressure in your head (characterised by headaches and problems with your eyesight, as well as pulsatile tinnitus).
If you do notice any signs that could indicate pulsatile tinnitus, speak to your doctor as soon as possible so they can examine you and confirm the diagnosis.