Q: Persistent daytime low-grade fever of 37.6-37.9°C for a month after severe stress. Is it stress-induced?

This post is a dramatization of a question and answer session experienced by our actual medical reviewers. Please note that this content is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare professional for any health concerns or before making any decisions related to your health or treatment.

Question:

About a month ago, I experienced a significant amount of stress. Since then, I have been having a low-grade fever ranging from 37.6 to 37.9°C during the day. Fever reducers (antipyretics) do not help at all. In the evening, my temperature naturally drops back down to a normal 37.0°C. However, from the time I wake up until around lunchtime, the mild fever returns. This cycle has been repeating for about a month now.

I've had almost all standard internal medicine tests done, and everything came back completely normal. I also have no pain anywhere in my body. Could this be a stress-induced fever? Which hospital department should I visit? It is very difficult to manage because I feel lethargic and drained of energy during the daytime when I need to be the most active.

Answer:

Hello. You must be having a hard time dealing with a low-grade fever that has persisted for a month. It must be particularly exhausting to feel your body getting dragged down during the day when you need to be active.

Looking at the pattern you described, there is a high possibility that you are experiencing a stress-induced low-grade fever (psychogenic fever):

• It started after a major stressful event

• Your temperature rises to 37.6–37.9°C only during the day

• It naturally returns to normal in the evening

• Your internal medicine test results are normal

• Fever-reducing medications have no effect

【Characteristics of Stress-Induced Low-Grade Fever】

This condition occurs because an imbalance in the autonomic nervous system affects the brain's thermoregulatory center. Since the fever is not caused by an actual physical inflammation, fever-reducing medications are generally ineffective, and it is characteristic for the body temperature to normalize during your rest periods (such as the evening).

【Recommended Medical Departments】

1. Psychiatry / Mental Health Clinic – For stress management and stabilization of the autonomic nervous system.

2. Family Medicine – For a comprehensive medical approach and to evaluate whether any additional testing is necessary.

【Helpful Management Methods】

• Maintain a regular sleep schedule (waking up and going to bed at the same time every day)

• Engage in light aerobic exercise (such as walking or yoga)

• Practice relaxation therapies (such as abdominal breathing or meditation)

• Reduce your caffeine intake

• Drink plenty of water throughout the day

Since these symptoms have lasted for over a month and are actively interfering with your daily life, I strongly recommend that you seek medical consultation. Even if the fever is stress-induced, it can improve significantly with the appropriate professional treatment.

For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.

https://fevercoach.us