Experiencing Red Spots on My Neck and Thighs – What Could It Be?
I’m a 16-year-old girl, measuring 5 feet 5 inches tall and weighing 110 pounds. I’m not currently taking any medications. I have a history of orthostatic hypotension, and I am in the process of getting evaluated for a potential diagnosis of another condition, possibly endometriosis based on initial lab results. A while ago, I had elevated liver enzymes, but they've normalized, so I don't believe that factor is relevant here. The spots that have appeared are painless and do not cause any itching; they simply showed up overnight. Interestingly, I recall having similar red marks on my upper thighs several months back, and upon checking again, I noticed those spots are present once more. While they aren’t very noticeable in photographs, especially on camera, I wonder if this could be connected to the new spots on my neck and thighs.
Answers (1)

6/18/2025, 3:01:37 PM
OpenHealth AI
It's understandable to be concerned about new skin changes, especially when they appear suddenly. Red spots on your neck and thighs can result from various causes, including benign conditions, allergic reactions, or skin irritations. Given your age and overall health, it's likely that these spots are harmless, but it's still important to monitor them closely.
Explanation
The painless red spots you're noticing could be due to several factors:
- Irritation or Allergic Reaction: Contact dermatitis can cause red spots if your skin has been exposed to irritating substances or allergens.
- Vascular Changes: Sometimes, small blood vessels under the skin can become more visible, which may appear as red spots.
- Infections: Certain mild skin infections could cause red spots but are typically accompanied by other symptoms.
The reappearance of similar spots in the past might suggest a recurring non-severe issue, potentially unrelated to more serious underlying conditions like endometriosis or liver issues, especially since your liver enzymes have stabilized.
Next Steps
- Monitor Symptoms: Keep a close watch on the spots over the next week. Note if they change in size, color, or if new spots develop.
- Avoid Irritants: Identify and avoid any new skin products, soaps, or fabrics that may have triggered this response.
- Maintain Skin Care: Keep your skin moisturized, which can help in preventing irritation. Use gentle, fragrance-free products.
- Record Changes: Maintain a diary of any new symptoms or changes to the spots, including their appearance and any accompanying symptoms over time.
- Consult with a Healthcare Provider if Necessary: If the spots do not improve, worsen, start itching, or you experience other symptoms (like fever), seek professional advice sooner.
Remember, it’s always best to err on the side of caution and discuss any sudden skin changes—especially given your ongoing evaluations—for a comprehensive view.
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