Left Armpit Pain, Fever, and Potential Causes - Family Medicine

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Understanding left armpit pain, fever, and associated symptoms can be complex, especially given the variety of potential causes. Based on your description, it seems you have been experiencing a range of symptoms, including pain in the left armpit, discomfort in the shoulder and arm, skin sensations resembling fever, and localized redness and itching.
First and foremost, it’s important to recognize that pain in the left armpit can stem from various sources. These may include musculoskeletal issues, nerve compression, or even referred pain from other areas, such as the heart or lungs. Given your age and the absence of any significant past medical history, serious conditions like heart problems are less likely, but they should not be entirely ruled out, especially if you have risk factors or a family history of cardiovascular disease.

The symptoms you describe, particularly the pain radiating from the armpit to the shoulder and arm, could suggest a nerve-related issue, such as thoracic outlet syndrome or a pinched nerve in the cervical spine. These conditions can cause pain, tingling, and weakness in the arm and shoulder area. The ultrasound you underwent, which indicated nerve pain, supports this possibility.

The sensation of your skin feeling warm or "feverish," along with localized redness and itching, could indicate an inflammatory response, possibly due to an allergic reaction or skin condition. Allergies can manifest in various ways, including hives or rashes, which can cause localized itching and redness. If a dermatologist has evaluated your skin and suggested an allergic reaction, it may be worth following up with them to ensure that the treatment is effective.

Your mention of sleep disturbances and fluctuating sleep patterns could also play a role in your symptoms. Sleep deprivation can exacerbate pain perception and lead to increased sensitivity to discomfort. It can also affect your immune system, potentially making you more susceptible to infections or inflammatory conditions.
Given the complexity of your symptoms, it would be prudent to consult with a healthcare provider who can perform a thorough evaluation. A primary care physician would be a good starting point, as they can assess your symptoms in a holistic manner and determine if referrals to specialists, such as a neurologist or rheumatologist, are necessary.
In the meantime, consider the following self-care strategies:
1. Rest and Sleep Hygiene: Prioritize good sleep habits to help regulate your sleep cycle. Aim for a consistent sleep schedule and create a restful environment.

2. Pain Management: Over-the-counter pain relievers, such as ibuprofen or acetaminophen, may help alleviate discomfort. However, consult with a healthcare provider before starting any new medication.

3. Gentle Stretching and Exercise: Engage in gentle stretching exercises to relieve tension in the shoulder and arm. Avoid activities that exacerbate your pain.

4. Monitor Symptoms: Keep track of your symptoms, noting any changes or patterns. This information can be valuable for your healthcare provider.

5. Stay Hydrated and Nourished: Ensure you are drinking enough water and eating a balanced diet to support your overall health.

While it’s natural to feel concerned about your symptoms, especially with the mention of cancer-related searches, it’s essential to approach this situation with a level-headed perspective. Many conditions can cause similar symptoms, and most are treatable. Seeking medical advice will provide clarity and help you address your concerns effectively.