**Spasmodic Dysmenorrhea: Core Concept**
Spasmodic dysmenorrhea is a type of primary dysmenorrhea characterized by painful menstrual cramps due to the contraction of the uterine muscle. This condition is often associated with a normal menstrual cycle, but the intense uterine contractions lead to ischemia and pain.

**Why the Correct Answer is Right**
The pain in spasmodic dysmenorrhea is primarily caused by the intense contractions of the uterine muscle, which is regulated by the autonomic nervous system. The release of prostaglandins, particularly PGF2α, also contributes to uterine contraction and pain. The condition is often treated with nonsteroidal anti-inflammatory drugs (NSAIDs) that inhibit the synthesis of prostaglandins.

**Why Each Wrong Option is Incorrect**
**Option A:** This option might be incorrect because spasmodic dysmenorrhea is not typically associated with anovulatory cycles, which are more characteristic of secondary dysmenorrhea.

**Option B:** This option might be incorrect because the primary treatment for spasmodic dysmenorrhea is not hormonal therapy, although combined oral contraceptives may be used in some cases.

**Option C:** This option is incorrect because spasmodic dysmenorrhea is not typically associated with an underlying pelvic pathology, such as endometriosis.

**Clinical Pearl / High-Yield Fact**
The use of NSAIDs, such as ibuprofen, is a first-line treatment for spasmodic dysmenorrhea due to their ability to inhibit prostaglandin synthesis and reduce uterine contractions.

**Correct Answer: C.**