It’s estimated that between 60 000 and 100 000 people in the US die each year due to blood clots.

But despite how common it is, and despite the many medications available, there are still many people who die from blood clots. They either seek help too late – or not at all.

Of course, there are things we can do to take care of ourselves. Together we can help increase awareness – and being aware of the life-saving warning signals that your body sends out can hopefully encourage more people to seek treatment as early as possible.

8 hidden signs you should never ignore
Blood clots form when blood thickens and blocks blood vessels, which can lead to serious conditions like heart attacks or strokes. Symptoms are often mild, so knowing the warning signs is crucial.

1. Swollen Calves
Clots often form in the calves (DVT), causing swelling, warmth, redness, or discoloration.

2. Leg Pain or Tenderness
Pain in your calf, foot, or leg—especially when squeezed—can be another sign of DVT.

3. Red Stripes on Veins
Visible red lines along veins may signal a clot. These areas might feel hot or sore.

4. Chest Pain
Clots in the lungs can cause sharp chest pain or pressure. Seek urgent medical help.

5. Breathing Difficulty
Shortness of breath, dizziness, or fainting could mean a clot in the lungs.

6. Dry Cough
A persistent dry cough—especially with chest pain or bloody phlegm—could point to a lung clot.

7. Vomiting or Diarrhea
Stomach pain, nausea, and bloody diarrhea may signal a clot in the intestines.

8. Severe Headache
A sudden, intense headache, vision or speech issues, or numbness may indicate a stroke.