A 30 yr old female presents with history of itching under right breast. On examination annular ring lesion was present under the breast. The diagnosis is:
**Core Concept**
The patient's presentation of an annular ring lesion under the breast suggests a dermatological condition that involves the skin's peripheral areas, potentially due to allergic or irritant reactions.
**Why the Correct Answer is Right**
The annular ring lesion, also known as a ringworm, is typically caused by a fungal infection, specifically *Tinea corporis*. This condition is characterized by a circular, itchy lesion that often appears on the trunk or extremities but can also be found in intertriginous areas like the breast. The skin's warm, moist environment under the breast provides an ideal setting for fungal growth.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not provided.
**Option B:** This option is not provided.
**Option C:** This option is not provided.
**Option D:** This option is not provided.
**Clinical Pearl / High-Yield Fact**
It's essential to note that ringworm can be caused by other fungi, including *Trichophyton*, *Microsporum*, and *Epidermophyton*. When diagnosing ringworm, it's crucial to consider the patient's occupation, hobbies, and other potential sources of fungal exposure.
**Correct Answer: D. Tinea corporis.