The human body is a complex machine, with countless systems working in tandem to ensure it functions properly. One such system is the circulatory system, which is responsible for carrying blood – and therefore oxygen – throughout the body.

When blood flow is reduced or impeded in some way, it can lead to a number of unpleasant symptoms. Here are ten signs you may be experiencing poor blood flow, along with pictures to help you better identify them.

1. Numbness or Tingling in Extremities

Numbness or tingling in hands or feet is a common symptom of poor blood flow. When blood isn’t reaching these extremities as it should, it can cause a pins-and-needles sensation.

This may be accompanied by a feeling of coldness in the affected area.

2. Swelling in Legs or Feet

Swelling in the lower extremities is another potential symptom of poor blood flow. This is caused by fluid building up in the affected area due to reduced circulation.

Sometimes the swelling will get better when you elevate your legs, making it more noticeable after standing for a long period of time.

3. Leg Pain or Cramping

Leg pain or cramping that gets worse with activity is another potential sign of poor blood flow.

This is known as claudication, and it is often caused by peripheral artery disease, a condition in which the arteries that supply blood to your legs become narrowed or blocked.

4. Cold Hands or Feet

If your hands and feet are chronically cold, it could be a sign of reduced blood flow. When circulation is poor, it can be difficult for blood to reach extremities and maintain a consistent temperature.

5. Varicose Veins

Varicose veins are a common sign of poor blood flow. These gnarled, enlarged veins often appear on the legs and are caused by weakened valves that allow blood to pool in the veins rather than flowing freely back to the heart.

6. Slow Healing

If cuts and wounds take longer than usual to heal, it may be due to poor blood circulation. Without proper blood flow to a wound, the body’s ability to heal itself is significantly reduced.

7. Erectile Dysfunction

Erectile dysfunction (ED) is often caused by poor blood flow to the penis. Without adequate blood flow, an erection may not be able to form or be sustained. ED can also be a sign of underlying health conditions such as heart disease or diabetes.

8. Pale Skin or Bluish Coloring

Skin that appears pale or bluish in color can indicate poor blood flow. This can happen when blood flow to an area is significantly reduced, causing a lack of oxygen and nutrients to the skin.

9. Chest Pain

Chest pain can be a sign of reduced blood flow to the heart. This can happen when the coronary arteries become blocked or narrowed, limiting blood supply to the heart muscle.

If you experience chest pain, it is important to seek medical attention immediately.

10. Fatigue or Weakness

If you regularly feel tired or weak, it could be due to poor blood flow. Without sufficient oxygen and nutrients being delivered throughout the body, it can be difficult to maintain energy levels and muscle function.