Not true about churg- strauss syndrome is?
**Core Concept**
Churg-Strauss syndrome is a form of vasculitis characterized by the presence of asthma, eosinophilia, and granulomatosis with polyangiitis. It is a rare autoimmune disorder that involves the inflammation of blood vessels, leading to damage in various organs.
**Why the Correct Answer is Right**
Churg-Strauss syndrome is often associated with a history of asthma, and the presence of eosinophilia is a hallmark of the disease. The inflammation in Churg-Strauss syndrome is due to the deposition of immune complexes in the blood vessel walls, leading to damage of the vessel walls and surrounding tissues. The granulomatosis component of the disease is characterized by the formation of granulomas, which are aggregates of immune cells that attempt to repair the damaged tissue.
**Why Each Wrong Option is Incorrect**
**Option A:** Churg-Strauss syndrome is not typically associated with a history of rheumatoid arthritis. This option is incorrect because Churg-Strauss syndrome is a distinct autoimmune disorder that is not directly related to rheumatoid arthritis.
**Option B:** Churg-Strauss syndrome is not typically associated with a history of Sjögren's syndrome. This option is incorrect because Churg-Strauss syndrome is a distinct autoimmune disorder that is not directly related to Sjögren's syndrome.
**Option C:** Churg-Strauss syndrome is not typically associated with a history of lupus. This option is incorrect because Churg-Strauss syndrome is a distinct autoimmune disorder that is not directly related to lupus.
**Option D:** Churg-Strauss syndrome is not typically associated with a history of dermatomyositis. This option is incorrect because Churg-Strauss syndrome is a distinct autoimmune disorder that is not directly related to dermatomyositis.
**Clinical Pearl / High-Yield Fact**
Churg-Strauss syndrome is often associated with a history of asthma and eosinophilia, and the presence of granulomatosis is a key diagnostic feature of the disease. Remember that Churg-Strauss syndrome is a distinct autoimmune disorder that is not directly related to other autoimmune diseases.
**Correct Answer:** D. Churg-Strauss syndrome is not typically associated with a history of dermatomyositis.