What causes a bruise under the eye for no reason?

Bruises, also called contusions or ecchymoses, are areas of discoloration that occur when blood vessels under the skin are damaged and blood leaks into the surrounding tissue. Bruises can occur for a variety of reasons, including trauma, injury, or certain medical conditions.

In some cases, a bruise may appear under the eye for no apparent reason. This can be due to several factors, including:

* Trauma: Even minor trauma, such as bumping your head or getting hit in the eye, can cause a bruise to form.

* Bleeding disorders: People with certain bleeding disorders, such as hemophilia or von Willebrand disease, may bruise more easily than others.

* Medications: Some medications, such as blood thinners or corticosteroids, can increase your risk of bruising.

* Sun exposure: UV radiation from the sun can damage the skin and make it more fragile, which can make it easier for bruises to form.

* Aging: As you get older, your skin loses elasticity and becomes more fragile, which can also increase your risk of bruising.

If you experience a bruise under the eye that does not go away within a few weeks or is accompanied by other symptoms, such as pain, swelling, or vision changes, you should see a doctor to rule out any underlying medical conditions.