Not a cause of panuveitis
**Core Concept**
Panuveitis refers to inflammation of all layers of the uvea, including the iris, choroid, and ciliary body. It can result from various causes, including infections, autoimmune disorders, and systemic diseases. Understanding the causes of panuveitis is crucial for its diagnosis and management.
**Why the Correct Answer is Right**
The correct answer is a condition that does not typically cause panuveitis. For example, retinal detachment primarily affects the retina and is not a direct cause of panuveitis. However, retinal vasculitis can be a component of panuveitis. Other causes of panuveitis include sarcoidosis, tuberculosis, and multiple sclerosis.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is a common cause of panuveitis. Certain infections, such as toxoplasmosis and histoplasmosis, can cause panuveitis.
**Option B:** This option is incorrect because it can cause uveitis, particularly posterior uveitis. However, it is not typically associated with panuveitis.
**Option C:** This option is incorrect because it is a common cause of panuveitis. Sarcoidosis can cause inflammation in all layers of the uvea, leading to panuveitis.
**Clinical Pearl / High-Yield Fact**
A classic exam trap is to distinguish between uveitis and panuveitis. Uveitis primarily affects one or two layers of the uvea, whereas panuveitis affects all layers. Remember that the term "panuveitis" implies involvement of all layers of the uvea.
**Correct Answer: B. Retinal detachment.**