Is a headache at 36.8°C considered a low-grade fever?

Low fever refers to mild fever. Headache may be associated with low-grade fever. The normal axillary body temperature for healthy individuals ranges from 36°C to 37.2°C. A body temperature of 36°C–8°C in a patient does not qualify as low fever. A temperature between 37.2°C and 38.5°C is considered low-grade fever. Low fever can be caused by factors such as low immunity, the common cold, or infectious diseases.

1. Low Immunity

Patients with weakened immune systems lack adequate defense against external pathogens and are more susceptible to various infections. Under a doctor's guidance, patients may take antipyretic medications such as ibuprofen granules or Huangqi Jing granules for treatment.

2. Common Cold

When patients have a cold, the viral infection can trigger inflammation and the release of inflammatory mediators, disrupting the balance of the body's temperature regulation center and leading to fever. Under medical supervision, patients may take oral medications such as phenylpropanolamine-methylephedrine-dextromethorphan tablets or paracetamol-caffeine-threo-hydrocodone tablets for treatment.

3. Infectious Diseases

Patients with infectious diseases, such as those suffering from Mycoplasma pneumoniae infection or tuberculosis, often develop fever. Under a doctor’s guidance, they may be treated with oral antiviral or antibiotic medications such as acyclovir tablets or amoxicillin tablets.

In addition, hyperthyroidism can also cause low-grade fever. Patients should visit a hospital for examination to determine the underlying cause and, under medical supervision, select appropriate medications for treatment.