A female patient presents with diffuse alopecia to you. She had suffered from typhoid fever 4 months back. Most probable diagnosis is-
**Core Concept**
Diffuse alopecia in a post-typhoid patient could be related to the autoimmune nature of the disease, where the body's immune response might affect hair follicles. This condition is often seen in association with other autoimmune disorders.
**Why the Correct Answer is Right**
The most probable diagnosis in this scenario is **alopecia areata**. This condition is characterized by an autoimmune response against the hair follicles, leading to hair loss. The patient's history of typhoid fever, an autoimmune disease itself, might have triggered or predisposed her to alopecia areata. The pathophysiology of alopecia areata involves the immune system attacking the hair follicles, resulting in hair loss. This is often seen in association with other autoimmune disorders such as Hashimoto's thyroiditis or vitiligo.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not relevant to the scenario and does not address the connection between typhoid fever and alopecia.
* **Option B:** This option might be considered but does not directly relate to the patient's history of typhoid fever and the onset of alopecia.
* **Option D:** This option is not a recognized medical condition related to alopecia.
**Clinical Pearl / High-Yield Fact**
Alopecia areata can be associated with other autoimmune disorders, and patients with a history of autoimmune diseases are at a higher risk of developing alopecia areata.
**Correct Answer:** A. Alopecia areata.