**Core Concept**
A prolapsed disc is a condition where the soft, gel-like center of an intervertebral disc bulges out through a tear in the outer, tougher layer, putting pressure on nearby nerves. The decision to operate for a prolapsed disc depends on various factors, including the severity of symptoms, the duration of symptoms, and the presence of neurological deficits.

**Why the Correct Answer is Right**
The correct answer is typically when there are signs of cauda equina syndrome, which is a medical emergency. Cauda equina syndrome is characterized by a combination of symptoms, including bilateral sciatica, saddle anesthesia, and urinary retention. This condition occurs when the prolapsed disc compresses the nerve roots of the cauda equina, leading to significant neurological deficits.

**Why Each Wrong Option is Incorrect**
**Option A:** Surgery is usually not recommended for patients with mild, acute symptoms that have not progressed over time. Patients with mild symptoms often respond well to conservative management, including physical therapy, pain medication, and rest.

**Option B:** While some patients with prolapsed discs may experience significant pain, surgery is not typically indicated solely for chronic pain management. Pain management is often addressed through conservative measures, including physical therapy, pain medication, and interventional procedures such as epidural injections.

**Option C:** Surgery is not typically indicated for patients with prolapsed discs who have not experienced any significant neurological deficits. Patients with mild symptoms and no neurological deficits can often be managed conservatively.

**Clinical Pearl / High-Yield Fact**
In patients with prolapsed discs, a key indicator for surgical intervention is the presence of cauda equina syndrome, characterized by bilateral sciatica, saddle anesthesia, and urinary retention. This condition requires immediate surgical intervention to prevent permanent neurological damage.

**Correct Answer: B. While some patients with prolapsed discs may experience significant pain, surgery is not typically indicated solely for chronic pain management. Pain management is often addressed through conservative measures, including physical therapy, pain medication, and interventional procedures such as epidural injections.**