When you are sick, your body undergoes several changes as it fights off infection, inflammation, or other health conditions. One common symptom many people notice is a higher-than-usual heart rate, also known as tachycardia. While this can feel concerning, it’s often a normal response to illness. Understanding why your heart rate rises during sickness can help you know when it’s nothing to worry about and when it may be time to seek medical attention.
For same-day illness testing and treatment, visit the walk-in clinic at AFC Urgent Care South Plainfield. Our medical team is available 7 days a week to provide the best healthcare in South Plainfield, NJ. No appointment is required– just walk-in or plan your visit in advance below!
Fever
A fever is one of the most common causes of an elevated heart rate when sick. As your body temperature rises, your heart works harder to pump blood and regulate heat. In fact, studies show that for every degree Celsius your temperature increases, your heart rate can climb by about 10 beats per minute. This helps speed up circulation so your immune system can respond more efficiently. While a faster heartbeat is a normal response to fever, a high rate combined with severe symptoms may signal the need for urgent evaluation.
Stress
Being ill is not just a physical burden. It also triggers emotional and physical stress. Stress activates your body’s “fight or flight” response, releasing hormones like adrenaline and cortisol. These hormones can increase your heart rate, even if you’re lying down and trying to rest. Anxiety about your symptoms or worries about missing work, school, or other responsibilities can add to this effect. While stress-related tachycardia often resolves as you calm down or recover, persistent racing heartbeats should be monitored.
Dehydration
Dehydration is another common cause of an increased heart rate while sick. Vomiting, diarrhea, and even sweating from a fever can cause fluid loss. When dehydrated, your blood volume drops, forcing your heart to beat faster to maintain adequate circulation. This is why rehydration is such an essential part of recovery. Drinking water, electrolyte solutions, or clear broths can help restore balance and reduce strain on your heart. Medical treatment such as IV fluids may be necessary if dehydration is severe.
Medications
Certain medications taken during illness may also influence heart rate. Decongestants, often found in cold and flu remedies, can stimulate your nervous system and cause your heart to beat faster. Some prescription drugs for asthma or infections may have similar effects. It is essential to read labels carefully and consult your healthcare provider if you notice unusual or uncomfortable changes in your heart rhythm after starting a new medication.
Visit AFC Urgent Care South Plainfield For Same-Day Illness Testing and Treatment
Although a higher heart rate is often a normal response to being sick, there are times when it should not be ignored. If your heartbeat feels unusually fast, irregular, or is accompanied by chest pain, dizziness, or shortness of breath, it’s best to seek urgent care. A medical professional can evaluate your symptoms, rule out severe conditions, and provide treatment to help you recover safely. At AFC Urgent Care South Plainfield, we can provide the necessary care to help you regain control over your symptoms. We’re open seven days a week and never require appointments for our services– just walk-in. If you have any additional questions about the illnesses we treat, or other services we provide, please contact us directly at (908) 222-3500.
