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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 develop an

unusual rash on your foot, it's been claimed. 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. One of the key warning signs of a heart attack is developing an unexplained discolouration on your feet, it's been revealed. READ MORE: HEART ATTACK SYMPTOMS - FIVE WARNING

SIGNS OF THE DEADLY CONDITION "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. "Brownish [or reddish] discolouration, usually on your sole(s) or

palm(s) - what it may be telling you: You have an infection in your heart or blood vessel. "The spots that developed on the bottom of this patient’s foot are also a sign of a heart

infection called infective endocarditis. Unlike Osler nodules, these spots are painless. These spots will clear without treatment, usually in a few days or weeks. The infection requires

treatment." Meanwhile, you could also be at risk of a heart attack if you regularly have indigestion. Indigestion may feel like a pain in your stomach, or feeling full or bloated.

It's caused by a radiating pain from a heart attack, which can also affect the chest, arms or back. If your indigestion is caused by a heart attack, it's unlikely to be accompanied

by belching or nausea. Meanwhile, the most common heart attack signs 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.