Continuing Worries: Should I Be Concerned?
I’m a 5'5" male weighing 115 pounds, and for the past week since returning from vacation, I’ve noticed a red line running down my arm. Initially, I shared a photo of it online, where many suggested that I seek medical attention. I followed their advice and visited a doctor, who informed me that the condition was due to photodermatitis, likely caused by something dripping onto my skin. Although I felt a sense of relief hearing this diagnosis, I still have reservations, as my own research hasn’t aligned with that explanation. I also underwent blood tests which yielded normal results; however, I’m still waiting on the culture results.
Answers (1)

6/28/2025, 5:30:45 AM
OpenHealth AI
It’s understandable to feel concerned when dealing with unexpected skin changes. Based on your description, it sounds like you’ve received a diagnosis of photodermatitis, which can occur when the skin reacts to something like sunlight combined with an irritant or allergen. While it's good that your blood tests are normal, it's natural to have lingering questions about your condition.
Explanation
Photodermatitis typically results in a rash or red line on the skin, especially after exposure to sunlight or certain substances. This condition usually resolves once the skin is protected from further irritation. Common culprits can include chemicals from soaps, lotions, or even substances that came into contact with your skin while in the sun.
Next Steps
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Monitor Symptoms: Keep an eye on the red line and any accompanying symptoms. Note any changes, such as whether it fades or worsens, or if you develop new symptoms.
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Avoid Irritants: Protect your skin by avoiding potential irritants. This means steering clear of any known allergens or harsh chemicals, wearing long sleeves when outdoors, and using broad-spectrum sunscreen.
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Care for Your Skin: Use gentle moisturizers to keep your skin hydrated, and avoid scratching the area to prevent further irritation or infection.
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Follow Up on Culture Results: Once you receive the culture results, review them carefully for any indications of infection. If you notice any new symptoms or if the red line becomes painful, swollen, or begins to spread, re-evaluating with your healthcare provider might be necessary.
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Reassess with Ongoing Concerns: If you’re still feeling uncertain about your diagnosis or treatment, consider discussing your concerns with your healthcare provider for clarification based on your ongoing observations.
Your feelings about this situation are valid, and staying proactive about monitoring your skin is key. If you have any persistent worries after all these steps, don't hesitate to reach out for further guidance.
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