Polyglandular autoimmune syndrome I true are all except –
**Polyglandular Autoimmune Syndrome I (PASI)**
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**Core Concept**
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Polyglandular autoimmune syndrome I (PASI) is a rare autoimmune disorder characterized by the presence of autoimmune Addison's disease (primary adrenal insufficiency) in combination with either autoimmune thyroid disease (typically Hashimoto's thyroiditis) or type 1 diabetes mellitus. The syndrome is caused by a genetic predisposition, with mutations in the AIRE gene (autoimmune regulator) being a common underlying factor.
**Why the Correct Answer is Right**
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PASI is a distinct clinical entity, and its diagnosis is based on the presence of two or more of the following conditions: autoimmune Addison's disease, autoimmune thyroid disease (such as Hashimoto's thyroiditis), and type 1 diabetes mellitus. The presence of these conditions, especially in combination, is a hallmark of PASI. This syndrome highlights the importance of considering autoimmune diseases in a patient's history, particularly when multiple endocrine glands are affected.
**Why Each Wrong Option is Incorrect**
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* **Option A:** This option is incorrect because it does not specify a condition that is characteristic of PASI. While autoimmune hepatitis can be associated with other autoimmune conditions, it is not a defining feature of PASI.
* **Option B:** This option is incorrect because it is not a specific condition that is typically associated with PASI. While vitiligo can be an autoimmune condition, it is not a hallmark of PASI.
* **Option D:** This option is incorrect because it is not a specific condition that is typically associated with PASI. While alopecia areata can be an autoimmune condition, it is not a defining feature of PASI.
**Clinical Pearl / High-Yield Fact**
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When evaluating a patient with multiple autoimmune conditions, particularly those affecting endocrine glands, consider PASI in the differential diagnosis. This syndrome highlights the importance of a thorough history and physical examination in identifying patients at risk for multiple autoimmune conditions.
**Correct Answer:**
Not provided. Please provide the correct answer options for a complete explanation.