Fever

Common viruses such as influenza, COVID-19, and the common cold trigger the immune system to raise body temperature. This is the most frequent cause of fever and usually resolves within a few days.

Infections like strep throat, urinary tract infections, and pneumonia cause the body to release pyrogens that reset the hypothalamic thermostat upward. These often require antibiotic treatment to resolve.

Autoimmune disorders such as rheumatoid arthritis, lupus, and inflammatory bowel disease can cause persistent low-grade fevers. The chronic inflammation triggers the same fever-producing pathways as infections.

Prolonged exposure to high temperatures or strenuous physical activity in hot environments can overwhelm the body's cooling mechanisms. This can result in dangerously elevated body temperature requiring emergency cooling.

Certain drugs including some antibiotics, anticonvulsants, and antipsychotics can cause drug fever as a side effect. This typically resolves when the offending medication is discontinued.

Reduces fever by acting on the hypothalamic heat-regulating center. Effective for fevers from viral and bacterial infections. Adults can take 500-1000mg every 4-6 hours, not exceeding 3000mg daily to protect the liver.

An NSAID that reduces fever and inflammation by inhibiting prostaglandin production. Particularly useful when fever is accompanied by body aches or inflammatory conditions. Take 200-400mg every 4-6 hours with food.

Prescribed when bacterial infection is confirmed as the cause of fever. The specific antibiotic depends on the infection type and location. Never self-prescribe; a doctor must determine the appropriate antibiotic and duration.

Administered in clinical settings for severe dehydration associated with high or prolonged fever. Addresses fluid and electrolyte losses and helps the body regulate temperature more effectively.

Rectal acetaminophen or ibuprofen suppositories are used when oral medication cannot be tolerated due to nausea or vomiting. They provide the same fever-reducing benefits through rectal absorption and are especially useful in children.

Sponging the body with lukewarm (not cold) water helps lower body temperature through evaporative cooling. This addresses fever from any cause and provides comfort. Avoid cold water as it can cause shivering, which raises core temperature.

Placing a damp, cool cloth on the forehead, neck, and wrists helps dissipate heat from areas where blood vessels are close to the skin. This provides temporary comfort for fever from any cause.

Mix one tablespoon of honey and juice from half a lemon in warm water. Honey has antimicrobial properties and soothes the throat, helpful when fever is caused by viral upper respiratory infections.

Wearing light, breathable clothing and keeping the room well-ventilated helps the body release excess heat naturally. This is particularly helpful for fever from any cause and prevents heat trapping under heavy blankets.

Drinking plenty of water, herbal teas, and clear broths replaces fluids lost through sweating. Rest conserves energy for the immune system to fight infection, addressing fevers from viral and bacterial causes.

Warm broth provides easily absorbed fluids, electrolytes, and amino acids like cysteine that support immune function. It helps maintain hydration during fever and is gentle on the stomach when appetite is reduced.

Rich in vitamin C, which supports white blood cell function and immune defense. The high water content also contributes to hydration, and the natural sugars provide gentle energy during illness.

Bananas are easy to digest and rich in potassium, an electrolyte commonly depleted during fever through sweating. They provide quick energy through natural sugars and are gentle on an upset stomach.

Probiotic-rich yogurt supports gut-associated immune tissue, which houses about 70% of the immune system. The protein and calories help maintain strength, and its cool, soft texture is soothing during fever.

Ginger contains gingerols with anti-inflammatory and mild antipyretic properties. It also helps reduce nausea that often accompanies fever, and the warm liquid promotes hydration and comfort.

A bland, nutrient-dense food that provides sustained energy through complex carbohydrates and contains beta-glucan fiber that has been shown to enhance immune cell activity. It is easy to digest and well-tolerated during illness.

With over 90% water content, watermelon is excellent for rehydration during fever. It also provides vitamins A and C for immune support, and its natural sweetness is appealing when appetite is diminished.

Alcohol causes dehydration by acting as a diuretic, worsening fluid loss already occurring from fever. It also suppresses immune function and can interact dangerously with fever-reducing medications like acetaminophen.

Coffee and energy drinks act as mild diuretics, contributing to dehydration during fever. Caffeine can also increase heart rate and interfere with the rest needed for recovery from infection.

High-fat fried foods are difficult to digest and can cause nausea and gastrointestinal distress during fever. They divert blood flow to the digestive system away from immune function and slow recovery.

Excessive refined sugar can temporarily suppress white blood cell activity and impair immune response. Processed sweets provide empty calories without the nutrients needed to fight the underlying cause of fever.

Highly spicy foods can irritate the gastrointestinal tract, which is already sensitive during fever. They may also increase sweating and fluid loss, worsening dehydration without providing fever-reducing benefits.

Dense, heavy proteins require significant energy to digest through thermogenesis, which can actually raise body temperature further. They are harder on the digestive system during illness when blood flow is prioritized for immune function.

For some individuals, heavy dairy products can increase mucus production and cause digestive discomfort during fever, especially when associated with respiratory infections. They can be difficult to digest when the GI tract is compromised.

Supports immune cell function and may reduce the duration and severity of infections causing fever. Evidence is strong for modest benefits in cold prevention and treatment. Typical dose is 500-1000mg daily; high doses may cause digestive upset.

Zinc lozenges or tablets can reduce the duration of viral colds that cause fever by inhibiting viral replication. Evidence is moderate to strong for shortening cold duration when taken within 24 hours of symptom onset. Typical dose is 15-30mg daily; excess zinc can cause nausea and copper deficiency.

Contains flavonoids with antiviral properties that may reduce the severity and duration of influenza and cold-related fevers. Evidence is moderate from several clinical trials. Typical dose is 600-900mg daily during illness. Avoid with autoimmune conditions as it may stimulate immune overactivity.

Adequate vitamin D levels support innate immune defense and may reduce susceptibility to respiratory infections that cause fever. Evidence is strong for deficiency correction reducing infection risk. Typical dose is 1000-2000 IU daily; have levels checked before high-dose supplementation.

May stimulate immune cell activity and reduce the duration of upper respiratory infections causing fever. Evidence is moderate but mixed across studies. Typical dose is 300-500mg three times daily at illness onset. Avoid with autoimmune disorders or allergy to daisy-family plants.

Support gut immune function and may reduce the frequency and duration of respiratory and gastrointestinal infections that cause fever. Evidence is moderate from multiple meta-analyses. Typical dose is 1-10 billion CFU daily. Generally safe but use caution in immunocompromised individuals.

Has anti-inflammatory properties that may help modulate the inflammatory response contributing to fever, particularly in inflammatory conditions. Evidence is moderate for general anti-inflammatory effects. Typical dose is 500-1000mg daily with black pepper for absorption. May interact with blood thinners and should be avoided before surgery.