Blood clots can be serious, especially if they form in a deep vein or travel to the lungs. Unlike many social media posts, there isn’t one simple list that guarantees a clot is present, but there are some important warning signs.
š¦µ Deep vein thrombosis (DVT) ā usually in a leg
Common signs include:
- Swelling in one leg (or one arm)
- Pain or tenderness, often in the calf
- Warmth in the affected area
- Redness or discoloration of the skin
- A feeling of heaviness in the limb
š« Pulmonary embolism (PE) ā a clot in the lungs (medical emergency)
Symptoms can include:
- Sudden shortness of breath
- Sharp chest pain, especially when breathing deeply
- Rapid heartbeat
- Lightheadedness or fainting
- Cough, sometimes with blood
š§ Stroke symptoms (if a clot blocks blood flow to the brain)
Remember FAST:
- Face drooping
- Arm weakness
- Speech difficulty
- Time to call emergency services
ā¤ļø Heart attack symptoms (if a clot affects blood flow to the heart)
- Chest pressure, squeezing, or pain
- Pain spreading to the arm, jaw, neck, shoulder, or back
- Shortness of breath
- Nausea or sweating
Risk factors
Blood clot risk can be higher with:
- Long periods of immobility (long flights, bed rest)
- Recent surgery or injury
- Smoking
- Pregnancy and the postpartum period
- Certain medications (including some hormone therapies)
- Cancer
- Inherited clotting disorders
šØ When to get urgent help
Seek immediate medical attention if you have:
- Sudden shortness of breath
- Chest pain
- Fainting
- Signs of a stroke
- One-sided leg swelling with pain and warmth
Bottom line
“Warning signs of blood clots” is a common clickbait headline, but blood clots are a real medical issue. Symptoms such as one-sided swelling, chest pain, shortness of breath, or stroke-like symptoms should not be ignored and warrant prompt medical evaluation.
