It can also occur with anemia, infections, thyroid problems, sleep disorders, depression, medication side effects, nutritional deficiencies, and many other conditions.

Therefore, fatigue should be considered in context rather than interpreted as proof of heart disease.

5. Rapid or Irregular Heartbeats

Most people occasionally notice their heartbeat.

You may feel your heart beat faster after exercise, during stress, after drinking caffeine, or during an emotional experience.

These situations are often normal.

But some people experience unusual sensations such as:

• Racing heartbeat
• Fluttering
• Skipping beats
• Pounding in the chest
• Irregular heartbeat
• A sensation that the heart suddenly speeds up

These sensations are commonly called palpitations.

Palpitations can have many causes.

Possible triggers include:

• Stress
• Anxiety
• Caffeine
• Nicotine
• Alcohol
• Dehydration
• Fever
• Certain medications
• Hormonal changes
• Electrolyte abnormalities
• Abnormal heart rhythms

Some heart rhythm disorders can require medical evaluation and treatment.

When Palpitations Are More Concerning

Palpitations deserve urgent attention when they occur together with: