Why do I feel bruised on My back around spine but not remember running into something?

Possible Causes of Back Bruising without Recall of Injury:

1. Muscle Strain:

- Overexertion or sudden movements can strain the muscles around your spine, leading to bruising.

2. Poor Posture:

- Prolonged sitting or standing in awkward positions can strain the back muscles, causing soreness.

3. Stress:

- Stress can lead to muscle tension and spasms, which may result in bruising.

4. Sleep Position:

- Sleeping in uncomfortable positions can strain your back muscles, causing bruising.

5. Medical Conditions:

- Certain medical conditions, such as osteoporosis, can weaken the bones and make them more prone to injury, leading to bruising.

6. Medication Side Effects:

- Some medications, such as blood thinners, can make you more likely to bruise easily.

7. Nerve Damage:

- Damage to the nerves in the back can lead to muscle weakness and bruising.

8. Bruising from a Previous Injury:

- You may not recall hitting something, but the bruise could be from an earlier injury.

9. Delayed Bruising:

- Sometimes, bruising may not appear until several hours or days after an injury.

If the bruise persists or worsens, or if you have any concerning symptoms, it's important to consult a healthcare professional for a proper diagnosis and treatment. They can determine the underlying cause and provide appropriate recommendations.