Hi,
It is difficult to determine the exact cause of the circular brown discoloration on your daughter's back without a physical examination. However, some possible causes of such a mark include:
* Birthmark: The circular brown discoloration may be a birthmark that has become more noticeable as your daughter grows older.
* Fungal Infection: Certain fungal infections can cause circular brown patches on the skin. These infections are more common in warm, moist environments.
*
Tinea Versicolor: This is a common fungal infection that can cause patches of discolored skin, often on the back, chest, or arms.
* Vitiligo: Vitiligo is a skin condition that causes the loss of pigmentation in patches on the skin.
* Post-inflammatory hyperpigmentation: This is a darkening of the skin that can occur after an
injury or inflammation.
It is recommended that you take your daughter to see a
dermatologist or
pediatrician for a physical examination to determine the cause of the discoloration and to recommend appropriate treatment if necessary.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Priyanka, General & Family Physician