Warning Signs of a Heart Attack You Should Never Ignore

What are the warning signs of a heart attack?

A heart attack occurs when blood supply to part of the heart muscle is blocked, causing tissue damage. The most common warning signs include chest pain or pressure, pain radiating to the arm or jaw, shortness of breath, cold sweats, and nausea. Symptoms can appear suddenly or build over hours.

Lilavati International in Bandra West, Mumbai, operates a 24/7 cardiac emergency response service with dedicated infrastructure for rapid heart attack assessment and intervention. No appointment is required — walk in or call an ambulance at any hour, including holidays.

What are the 7 signs before you have a heart attack?

Heart attack symptoms vary between individuals, but the following warning signs — alone or in combination — require urgent medical attention. Recognising them early can significantly affect outcomes.

• Chest discomfort: Pressure, squeezing, fullness, or pain in the centre or left side of the chest, lasting more than a few minutes or coming and going.
• Pain radiating to the upper body: Discomfort spreading to one or both arms, the back, neck, jaw, or stomach.
• Shortness of breath: Difficulty breathing, with or without chest discomfort.
• Cold sweats: Sudden, unexplained sweating not related to heat or exertion.
• Nausea or vomiting: Particularly in women, nausea is a frequently overlooked cardiac symptom.
• Lightheadedness or dizziness: A sudden feeling of faintness or loss of balance.
• Unusual fatigue: Extreme tiredness, especially in the days leading up to an event, that cannot be explained by activity level.

What are the early warning signs of a heart attack in women?

Women are more likely than men to experience heart attack symptoms that do not include classic chest pain. These atypical presentations are a leading reason cardiac events in women are diagnosed later or missed entirely.

• Unusual or extreme fatigue lasting days before the event
• Nausea, vomiting, or indigestion-like discomfort
• Pain or pressure in the upper back, shoulders, or jaw
• Shortness of breath without chest pain
• Dizziness or lightheadedness
• Sleep disturbances in the days preceding the event

Women should not dismiss these symptoms as stress or gastrointestinal issues. If multiple symptoms appear together — especially with a personal or family history of heart disease — seek emergency evaluation promptly.

What are the four silent signs of a heart attack?

A silent heart attack — also called a silent myocardial infarction — causes little or no recognisable pain. It is only identified later through an ECG or cardiac imaging. The four most commonly reported silent signs are:

1. Mild chest tightness or pressure mistaken for indigestion or muscle strain
2. Unexplained fatigue that persists over several days without a clear cause
3. Subtle shortness of breath during routine activities that previously caused no difficulty
4. Jaw, neck, or upper back discomfort with no musculoskeletal explanation

Silent heart attacks carry the same risk of future cardiac events as symptomatic ones. Routine cardiac screening — including ECG — is advisable for individuals with known risk factors such as hypertension, diabetes, or a family history of coronary artery disease.

At Lilavati International in Bandra West, Mumbai, round-the-clock access to ECG and diagnostic laboratory services supports rapid assessment for both symptomatic and silent cardiac events. Learn more about our Cardiology services or ECG and cardiac diagnostics.

How do I know if chest pain is a heart attack or something else?

Chest pain has many causes, ranging from musculoskeletal strain to acid reflux to cardiac emergencies. The following comparison can help distinguish cardiac chest pain from other causes — but it is not a substitute for clinical evaluation.

When should you call an ambulance or go to the emergency department?

Seek emergency care immediately — do not wait more than five minutes — if you experience any of the following:

• Chest pain or pressure lasting more than five minutes, or that goes away and returns
• Chest discomfort accompanied by sweating, nausea, or shortness of breath
• Pain spreading to the arm, jaw, neck, or back
• Sudden loss of consciousness or near-fainting
• Rapid or irregular heartbeat with dizziness
• Shortness of breath at rest with no other explanation

Do not drive yourself to hospital if you suspect a heart attack. Call an ambulance so that assessment can begin en route.

Lilavati International ambulance: +91 97692 50010 or +91 75063 58779. The emergency department at Lilavati International, Bandra West, Mumbai, is located on the ground floor next to MRI and is open 24 hours a day, 365 days a year, including public holidays. No appointment is required.

For non-emergency cardiac consultations — such as evaluation of recurring chest tightness, unexplained fatigue, or known risk factors — consult a cardiologist if symptoms have persisted for more than two weeks or are worsening. Explore Cardiology at Lilavati International for outpatient cardiac assessment options.

How does Lilavati International respond to a cardiac emergency in Mumbai?

Lilavati International in Bandra West, Mumbai, is a JCI- and NABH-accredited quaternary-care hospital with a dedicated cardiac emergency response pathway. On arrival at the emergency department — or on ambulance dispatch — the following infrastructure is immediately available:

• 24/7 ECG and cardiac monitoring for rapid diagnosis of myocardial infarction
• CT and MRI imaging on the ground floor adjacent to the emergency department
• Full diagnostic laboratory services including cardiac enzyme testing around the clock
• Cardiac catheterisation laboratory for interventional procedures including coronary angiography and angioplasty
• ICCU (Intensive Cardiac Care Unit) for post-event monitoring and stabilisation
• Specialist cardiology and cardiothoracic surgery support available at all hours

The hospital's emergency contact numbers are 022-69318063 / 022-69318064. Ambulance services are reachable at +91 97692 50010 or +91 75063 58779.

For planned cardiac procedures or specialist consultations, explore Cardiac Catheterisation at Lilavati International or speak with a cardiologist via the booking form on this page.