Unexplained Fever and Abdominal Muscle Pain: What You Need to Know - Family Medicine

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Fever of unknown origin with abdominal muscle pain?


Hello doctor, for the past two months, I have been experiencing persistent abdominal muscle cramps that feel different from typical leg cramps.
It feels like someone is pulling the muscles inward from the inside.
I often wake up at night due to the pain, and my entire body feels sore, similar to when I have a cold or fever.
My ear temperature has not exceeded 37 degrees Celsius, but when I measured my abdomen, it was 38.9 degrees Celsius (it felt hot to the touch, so I used an ear thermometer).
During the day, my body tends to twitch due to the pain, which affects my driving safety and work.
The muscle pain is often accompanied by headaches.
What could this issue be? If I need to seek medical attention, which specialty should I consult? Thank you.

Lulu, 50~59 year old female. Ask Date: 2022/11/14

Dr. Lin Zhebin reply Family Medicine


Hello: Regarding your abdominal pain, since it is accompanied by headaches and generalized muscle soreness, it is important to consider the possibility of an infection.
Additionally, there may be endocrine and hormonal issues at play.
From an organ perspective, the problem could involve the superficial skin, subcutaneous tissue, and muscles, or it could be related to deeper internal organs and the peritoneum.
It is recommended that you first visit a family medicine physician for evaluation.

Reply Date: 2022/11/14

More Info


Unexplained fever and abdominal muscle pain can be concerning symptoms that may indicate a variety of underlying conditions. Based on your description, it seems that you are experiencing persistent abdominal muscle pain, which feels different from typical muscle cramps, and you have noted a feverish sensation in your abdomen. Additionally, the generalized muscle soreness and headaches you are experiencing could be related to several factors, including infections, inflammatory conditions, or even stress-related issues.


Possible Causes
1. Infection: One of the most common causes of unexplained fever and muscle pain is an infection. This could be viral, bacterial, or even parasitic. For instance, conditions such as viral gastroenteritis or bacterial infections like appendicitis can lead to abdominal pain and fever. Infections can also cause systemic symptoms like muscle aches and headaches.

2. Inflammatory Conditions: Conditions such as inflammatory bowel disease (IBD), which includes Crohn's disease and ulcerative colitis, can cause abdominal pain and fever. These conditions often present with additional gastrointestinal symptoms, such as diarrhea or weight loss.

3. Muscle Strain or Overuse: If you have recently increased your physical activity or engaged in strenuous exercise, muscle strain could be a contributing factor. However, the presence of fever suggests that there may be an underlying issue beyond simple muscle soreness.

4. Autoimmune Disorders: Conditions like fibromyalgia or other autoimmune diseases can cause widespread muscle pain and fatigue, often accompanied by fever. These conditions can be challenging to diagnose and may require a thorough evaluation.

5. Stress and Anxiety: Psychological factors can also manifest as physical symptoms. Chronic stress and anxiety can lead to muscle tension and pain, as well as headaches. While these symptoms may not directly cause fever, they can exacerbate feelings of discomfort.


Recommended Actions
Given the complexity of your symptoms, it is crucial to seek medical attention. Here are some steps you can take:
1. Consult a Primary Care Physician: Start by visiting your primary care physician (PCP). They can perform a comprehensive evaluation, including a physical examination and a review of your medical history. Your PCP may order blood tests, imaging studies, or refer you to a specialist based on their findings.

2. Consider Specialists: Depending on the initial evaluation, you may be referred to specialists such as:
- Infectious Disease Specialist: If an infection is suspected.

- Gastroenterologist: If gastrointestinal issues are a concern.

- Rheumatologist: If an autoimmune condition is suspected.

3. Document Symptoms: Keep a detailed record of your symptoms, including when they occur, their intensity, and any other associated symptoms (like changes in bowel habits, fatigue, or weight loss). This information will be valuable for your healthcare provider.

4. Monitor Fever: Continue to monitor your temperature and note any patterns. If your fever persists or worsens, seek immediate medical attention.

5. Lifestyle Modifications: While waiting for your appointment, consider gentle stretching or relaxation techniques to alleviate muscle tension. Ensure you are well-hydrated and maintain a balanced diet to support your overall health.


Conclusion
Unexplained fever and abdominal muscle pain can arise from various causes, ranging from infections to inflammatory conditions or even stress-related issues. It is essential to seek medical evaluation to determine the underlying cause and receive appropriate treatment. Early intervention can lead to better outcomes and help alleviate your symptoms, allowing you to return to your daily activities safely.

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