Most common age for intusuppetion is –
**Core Concept**
Intussusception is a medical emergency characterized by the telescoping of a portion of the intestine into another adjacent portion, leading to bowel obstruction and potentially ischemia. This condition typically affects children, and its exact cause is often unknown.
**Why the Correct Answer is Right**
The most common age for intussusception is between 5 to 9 months, with a peak incidence around 6 months of age. This is because the intestinal Peyer's patches, which are responsible for immune surveillance, are most active during this period. The inflammation and edema associated with these immune responses can lead to the intussusception. The exact mechanism is not fully understood, but it is thought to involve an abnormal immune response to a viral or bacterial infection.
**Why Each Wrong Option is Incorrect**
* **Option A:** Intussusception can occur at any age, but it is most common in infants, not in adults.
* **Option B:** While intussusception is more common in males than females, stating a specific age range is not accurate.
* **Option C:** Intussusception is not typically associated with the elderly population, making this option incorrect.
**Clinical Pearl / High-Yield Fact**
The classic clinical presentation of intussusception includes abdominal pain, vomiting, and bloody stools. A "currant jelly" stool is often a sign of intussusception, due to the presence of blood and mucus.
**Correct Answer: C. 6 months**