Why Is the Palm Beneath My Thumb Turning Blue?

Darkening of the palm below the thumb may be caused by subungual bleeding, compression or impact, anemia, low blood pressure, or poor blood circulation. It could also be due to a lean body type with less fat content in the hands, resulting in prominent and bluish veins. If there is a bump under the thumb, it could be caused by flat warts or skin inflammation.

Darkening of the Palm Below the Thumb

1. This condition is caused by subungual bleeding.

2. Less bleeding manifests as a bluish color, while more bleeding can result in purple or black spots.

3. It could be caused by trauma, compression, impact, or squeezing. It is important to protect the nails regularly.

4. It could also be due to anemia, low blood pressure, or hematological diseases.

5. Another possibility is a lean body with less fat content in the hand muscles, resulting in prominent and bluish veins.

6. It could also be caused by cold hands and poor blood circulation.

Bump Under the Thumb

1. If there is pain after pressing, it could be flat warts on the finger skin.

2. This condition is caused by human papillomavirus infection, which can lead to swelling and pain in the finger area.

3. Redness, swelling, and pain could indicate inflammation, possibly due to skin irritation in the local area.

4. It could also be caused by insect bites that break the skin or trauma that leads to local soft tissue damage.