High Fever in Pregnant Women

High Fever in Pregnant Women: When Is It Dangerous?

Fever, or high temperature (above 38.0°C), during pregnancy is a symptom that should never be ignored. Unlike non-pregnant individuals, expectant mothers even a common cold with a fever requires a doctor's consultation. This is because fever can be dangerous for fetal development, especially in early gestation, and may also indicate serious infections that require immediate treatment.

Why Is High Temperature Dangerous for the Fetus?

The main danger is associated with the first trimester of pregnancy. During this period, the implantation and formation of all major organs and systems of the baby occur. Studies show that hyperthermia (overheating of the mother's body) in early gestation can increase the risk of neural tube defects and other congenital anomalies. In the second and third trimesters the risks are lower, but high temperature still constitutes significant stress on the body and can provoke complications.

Most Common Causes of Fever in Pregnant Women

Since the immune system of a pregnant woman is physiologically suppressed, she becomes more vulnerable to infections.

• Common cold and flu: The most frequent cause. Pregnant women tolerate flu more poorly and have a higher risk of complications such as pneumonia.
• Urinary tract infections (UTIs): A very common problem. A bladder infection (cystitis) or kidney infection (pyelonephritis) often presents with high temperature and requires mandatory antibiotic treatment.
• Other infections: Chorioamnionitis (infection of the fetal membranes), appendicitis, food poisoning.

What to Do?

When the temperature rises above 38.0°C, you should contact a doctor. Do not self‑medicate. The only antipyretic considered relatively safe at all stages of pregnancy is paracetamol, but even its dosage and suitability for use should be determined by a physician. For medication safety, read the article "Medications During Pregnancy".