Post-Cold Symptoms: Fever, Sweating, and Head Pain Explained - Family Medicine

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Cold and fever


Hello doctor, I recently caught a cold.
At first, I had a severe headache and a high fever, along with tonsillitis and muscle aches that lasted about two days before improving (the headache became less intense).
However, afterward, I started experiencing episodes of sweating, usually triggered by a sudden feeling of warmth.
This often happens at night while I’m sleeping; I wake up as soon as I start to sweat.
Additionally, when I slightly lower my head, I feel a sensation of increased intracranial pressure, with my head feeling very hot, pain above my eyes, and even a general feeling of warmth throughout my body.
This sweating phenomenon has persisted for four days since my cold started to improve.
Could you please explain the reason for this? Thank you.

Xiao P, 20~29 year old female. Ask Date: 2004/11/18

Dr. Huang Jianling reply Family Medicine


Dear Xiao P, your symptoms are likely indicative of an upper respiratory tract infection combined with tonsillitis.
The symptoms are generally more severe and may lead to a bacterial infection.
If the infection spreads to the bloodstream, you may experience fever and chills.
Please seek an examination at the Internal Medicine, Otolaryngology, or Family Medicine outpatient department as soon as possible.
Sincerely, Dr.
Huang Jian-Ling, Department of Family Medicine, Taoyuan Hospital, Ministry of Health and Welfare.

Reply Date: 2004/11/18

More Info


The symptoms you are experiencing following your cold—persistent headaches, episodes of sweating, and feelings of heat—can be quite distressing and may indicate a few underlying issues. Let's break down your symptoms and explore possible explanations.

Initially, it’s important to recognize that after a viral infection like a cold, it is not uncommon for individuals to experience lingering symptoms. This phenomenon is often referred to as "post-viral syndrome." The body has gone through a significant amount of stress while fighting off the infection, which can lead to a variety of symptoms even after the acute phase has resolved.

1. Post-Viral Headaches: The headaches you are experiencing could be a result of tension or sinus pressure. During a cold, inflammation can occur in the sinuses, leading to sinus headaches. Even after the cold has resolved, the residual inflammation can continue to cause discomfort. Additionally, tension headaches can arise from stress or changes in sleep patterns, which are common during illness.

2. Sweating and Flushing: The episodes of sweating you describe, especially when you feel a sudden warmth, could be related to your body’s attempt to regulate temperature post-infection. After a fever, it is normal for the body to experience fluctuations in temperature as it returns to its baseline. This can sometimes manifest as night sweats or sudden sweating during the day. If you are experiencing these symptoms predominantly at night, it may be worth considering whether your sleep environment is contributing to overheating.

3. Feeling of Heat and Blood Flow Sensations: The sensation of your head feeling hot or experiencing a feeling of "brain congestion" when you lower your head could be related to increased intracranial pressure or vascular changes. When you have a cold, your body’s inflammatory response can lead to changes in blood flow, which might explain the sensations you are feeling. However, if these sensations are accompanied by severe headaches or neurological symptoms (like visual disturbances or weakness), it is crucial to seek medical attention.

4. Anxiety and Stress: It’s also worth noting that the stress of being ill can lead to anxiety, which can exacerbate physical symptoms. If you find yourself worrying about your health, this could contribute to the physical sensations you are experiencing.

Given that your symptoms have persisted for several days after the initial illness, it would be prudent to consult with a healthcare professional. A thorough evaluation can help rule out any complications from the cold, such as secondary infections (like bacterial sinusitis or pneumonia) or other underlying conditions that may require treatment.

In summary, while your symptoms may be a normal part of recovery from a viral infection, they warrant further investigation if they persist or worsen. Consider keeping a symptom diary to track when these episodes occur and any potential triggers. This information can be invaluable for your healthcare provider in determining the best course of action. Remember to stay hydrated, rest adequately, and consider discussing your symptoms with a doctor who may recommend further tests or treatments to help you feel better.

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