Dennies Morgan fold is indicative of: March 2013
## **Core Concept**
The Dennie-Morgan fold, also known as the infraorbital crease, is a significant clinical sign observed during physical examinations. It is associated with allergic conditions and is characterized by a crease or fold under the eye.
## **Why the Correct Answer is Right**
The Dennie-Morgan fold is particularly indicative of chronic allergic rhinitis or atopic conditions. The presence of this fold is thought to be due to the chronic swelling of the nasal passages and the subsequent effect on facial structures, leading to the formation of the crease. This sign is often looked for in patients suspected of having allergic rhinitis or other atopic diseases.
## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because while various conditions might present with facial or nasal symptoms, the Dennie-Morgan fold is specifically associated with allergic conditions rather than being a general indicator of sinus infections or other nasal pathologies.
- **Option B:** This option is incorrect as there isn't enough context provided to directly link the Dennie-Morgan fold with the conditions listed; however, the correct association is with allergic conditions.
- **Option C:** Without specific details on the conditions listed in the options, it's understood that the Dennie-Morgan fold is specifically related to allergic conditions, making other options less relevant.
- **Option D:** This option is incorrect because the correct answer provided indicates that the Dennie-Morgan fold is related to allergic conditions, not the conditions listed here.
## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that the presence of a Dennie-Morgan fold can support the diagnosis of allergic rhinitis. Clinicians often look for this sign in conjunction with other diagnostic criteria to assess for atopic conditions. The fold's presence can hint at chronic nasal congestion and allergic predisposition.
## **Correct Answer:** D. Allergic rhinitis.