What's wrong with the low-grade fever? It'll surprise you

Sometimes people have a low-grade fever and don't know what caused it. Most people don’t take it seriously and may just take a cold medicine, but some low-grade fevers can be very dangerous. Persistent low-grade fever may also be caused by chronic inflammation, which will heal once the inflammation subsides. But don't just not care. What is a low-grade fever?

A low-grade fever refers to a body temperature between 37.3℃ and 38℃. Long-term low-grade fever refers to a fever that lasts for more than two weeks, excluding intermittent fever.

Low-grade fever can be divided into functional low-grade fever and organic low-grade fever.

Functional low-grade fever:

Its clinical feature is a body temperature that is about 0.3~0.5℃ higher than normal, generally not exceeding 38℃. Common ones are:

1 Physiological low-grade fever: seen in women with low-grade fever before menstruation or during pregnancy:

2 Seasonal low-grade fever: A mild fever occurs in summer accompanied by fatigue and loss of appetite, which is relieved naturally in autumn. It is called summer mild fever:

3 Environmental low-grade fever: About 10% of people working in a high-temperature environment will have a low-grade fever

4 Neurological functional low-grade fever:

Clinically, it is more common in young people aged 20-30 years old, and the patient's body temperature is 0.3℃-0.5℃ higher than normal. The duration of low-grade fever varies from several months to several years. The general condition is good and there is no weight loss. This type of patients accounts for about 1/3 of the total number of patients with long-term low-grade fever and has a good prognosis.

Organic low-grade fever:

There are many diseases that cause organic low-grade fever, common causes include tuberculosis, bile tract infection, chronic lesion infection, urinary tract infection, rheumatism, hepatitis, tumors, etc. Others are hyperthyroidism, anemia, connective tissue disease, post-streptococcal status, etc.