This can cause a bruise without the person waking up.

2. Capillary Fragility

With aging or certain health conditions, blood vessels can become more fragile, causing them to break easily even with mild friction.

3. Blood Thinning Medications or Supplements

The use of aspirin, warfarin, ibuprofen, or supplements such as omega-3 fatty acids and vitamin E can make clotting difficult, increasing the likelihood of spontaneous bruising.

4. Vitamin Deficiencies

A lack of vitamin C, vitamin K, or iron can affect the health of blood vessels and their clotting ability.

5. Blood Disorders

In less common cases, unexplained bruising may be related to problems such as anemia, thrombocytopenia (low platelet count), or clotting disorders.

When to See a Doctor

You should seek medical attention if:

Bruises appear frequently for no clear reason