Heart attack Hidden warning sign revealed - Photo and Video

HEART attack symptoms include severe chest pain, difficulty breathing, and suddenly feeling very sick. But, you could also be at risk of a deadly myocardial infarction, and even heart disease, if you notice this hidden sign on your feet. Should you speak to a doctor?

 Heart attacks 

are serious medical emergencies that require immediate attention from a doctor. You could be at risk of a deadly heart attack - or myocardial infarction - if you suddenly notice that your feet are swollen.

Heart attacks are caused by a lack of blood reaching the heart.

Without enough blood, the heart could become seriously damaged - and it may even be life-threatening.

A heart attack could also be a symptom of coronary heart disease, which is where fatty deposits build up in the arteries, which limits the amount of blood reaching the heart.

You may be at risk of a deadly heart attack if your feet or lower legs appear swollen.

Heart attack symptoms: Signs of heart disease include swollen feet (Image: GETTY Images)Your feet may appear to be swollen if fluid is building up in the body, warned the American Academy of Dermatology (AAD).

If the heart isn't working at 100 percent, fluid slowly starts to accumulate.

Blood is pumped around the body at a slower rate, and the fluid starts to build up in the lower half of your body.

You're more likely to have a heart attack if your blood is being pumped around the body at a slower rate than normal.

"Warning signs can appear on your skin and nails, which is why your dermatologist may be the first doctor to notice that you have heart disease," said the AAD.

"If you know what to look for, you can also find warning signs of heart disease on your skin and nails.

"Swelling in your feet and lower legs: What it may be telling you - your heart isn’t working properly.

"Many diseases of the heart cause fluid to build up in your feet and lower legs. As the fluid builds up, you may see swelling, which can extend as far as the upper legs and groin."

Heart attack symptoms: Chest pain may also be a sign of a heart attack (Image: GETTY Images)Swelling in the ankles, feet or legs is also referred to as oedema, and it often goes away by itself.

But, if it doesn't get better within a few days, you should consider speaking to a doctor.

The condition can also cause your skin to appear shiny or stretched, added the NHS.

Oedema may also be caused by an insect bite, an infection, an injury, or even pregnancy.

Meanwhile, more common heart attack symptoms include severe chest pain, having a radiating pain in your arm, and suddenly feeling very dizzy.

But you can lower your risk of a heart attack by making some small diet or lifestyle changes.

Eating a healthy, balanced diet will lower your chances of fatty deposits in your arteries.

If you think you, or someone you know, may be having a heart attack, it's crucial that you dial 999 straight away.