Symmetrical Red Spots on the Back: Causes and Insights - Dermatology

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Hello! Thank you for your question regarding the symmetrical red spots on your back. It's understandable to be concerned about any changes in your skin, especially when they appear in a pattern like you described.
From your description, it seems that you are experiencing symmetrical red spots that are neither itchy nor painful. This could suggest a few possibilities, but it is important to note that a definitive diagnosis can only be made through a physical examination and possibly further testing by a healthcare professional.

One potential cause of symmetrical red spots on the skin is a condition known as pityriasis rosea. This is a common skin rash that often starts with a single large spot (herald patch) followed by smaller spots that can appear symmetrically on the body. The rash is usually not itchy and tends to resolve on its own within several weeks to months. The exact cause of pityriasis rosea is not well understood, but it is thought to be related to viral infections.

Another possibility could be dermatitis, which can manifest as red spots or patches on the skin. This condition can arise from various triggers, including irritants, allergens, or even stress. While dermatitis is often itchy, some forms may not cause any discomfort.

Psoriasis is another condition that can present with red spots or patches, typically covered with silvery scales. However, psoriasis is usually associated with some degree of itching or discomfort, which you mentioned you do not have.

If the spots are symmetrical and have appeared in the same location as before, it could also indicate a recurrent condition. Vascular lesions, such as cherry angiomas or other benign vascular growths, can also appear as red spots on the skin and are generally harmless.

Since you mentioned that you found information online primarily from sources in mainland China, it’s important to be cautious with self-diagnosis based on internet research. Skin conditions can vary widely in presentation and underlying causes, and what may be common in one region might not be as prevalent in another.

Given that these spots have recurred, I recommend scheduling an appointment with a dermatologist. They can provide a thorough examination, take a detailed medical history, and possibly perform a skin biopsy if necessary to determine the exact nature of the spots. This will help in ruling out any serious conditions and in providing you with the appropriate treatment or reassurance.

In the meantime, keep an eye on the spots for any changes in size, color, or symptoms such as itching or pain. Avoid using any new products on your skin until you have a clearer understanding of what the spots might be, as this could potentially irritate your skin further.

In summary, while there are several benign possibilities for symmetrical red spots on your back, a professional evaluation is essential for an accurate diagnosis and peace of mind. Thank you for reaching out, and I hope you find the answers you need soon!