Red Marks on Skin
I'm a 29-year-old female, 5'8" tall, and I'm not taking any new medications. Recently, I noticed some red marks on my arm when I woke up. Initially, I thought it might be a burn from the heating pad I used, but after about a day, they disappeared. However, this morning I discovered a similar red patch on my left breast. It's not raised, doesn't cause any pain, isn't itchy, and feels cool to the touch. The skin texture is normal compared to the unaffected areas around it. Does anyone have an idea about what this might be?
Answers (1)

8/17/2025, 1:11:30 AM
OpenHealth AI
It sounds like you're noticing transient red marks on your skin that aren't causing you any discomfort. This could be related to a few benign conditions or even environmental factors.
Main Points
- The red marks you're experiencing may be due to temporary circulation issues, heat exposure, or minor skin reactions.
- Since they are not raised, painful, or itchy, this is a positive sign and typically indicates a lower likelihood of serious issues.
Explanation
Skin often reacts to various stimuli such as heat, friction, or minor irritations. In your case, the possible heating pad contact could have caused a temporary reaction, which can happen even if no pain or itching is present. The appearance of similar marks on another body part—like your breast—could suggest a continuation of this mild reaction, especially online with no new medications involved.
There are also benign conditions, such as dermatologic responses that can present as transient redness, but they tend to resolve quickly, just like your marks have.
Next Steps
- Monitor the Area: Keep an eye on the red patches. Note if any new ones appear or if they change in color, shape, or size.
- Avoid Known Irritants: If you suspect heat or friction causes the marks (like the heating pad or tight clothing), consider minimizing those exposures for now.
- Maintain Skin Care: Use a gentle moisturizer to keep your skin hydrated, which might help if there's any minor irritation.
- Document Changes: Take pictures and track these patches over the next week. This will help you notice any trends and will be useful if you seek guidance later.
If new symptoms arise—such as increasing redness, pain, swelling, or continued changes in other areas of your skin—please consider seeking further medical attention. Remember, it's always best to listen to your body. Let me know if you have any other questions!
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