MCQ – 13291

Correct Answer » C Explanation

Detailed Explanation:

Clinical Reasoning for the Correct Answer:
– Spasmodic dysmenorrhea refers to painful menstruation characterized by cramping lower abdominal pain, often starting just before or with the onset of menses.
– Submucous fibroid (a type of uterine leiomyoma that projects into the uterine cavity) distorts the endometrial cavity and impedes free drainage of menstrual blood.
– Accumulation and forceful expulsion of menstrual blood through a partially obstructed cavity → cramping, colicky pain (spasmodic dysmenorrhea).

Why Option A (Endometriosis) is Incorrect:
– Endometriosis typically causes *congestive (secondary) dysmenorrhea*, not spasmodic.
– Pain in endometriosis is dull, may precede menses by days, and persists throughout menstruation.
– Endometriosis also presents with dyspareunia and chronic pelvic pain.

Why Option B (Dysfunctional Uterine Bleeding/DUB) is Incorrect:
– DUB is abnormal uterine bleeding due to hormonal imbalance, usually without anatomical pathology.
– DUB rarely causes severe dysmenorrhea; patients often present with painless, irregular bleeding.

Why Option D (Ovarian cyst) is Incorrect:
– Ovarian cysts (functional or pathological) may cause pelvic pain or ovarian torsion.
– They do not typically result in classic spasmodic dysmenorrhea, but may cause midcycle or chronic pain if symptomatic.
– Dysmenorrhea is not a hallmark symptom of ovarian cysts.

Common Gynecological Associations with Dysmenorrhea
– Spasmodic: Submucous fibroid (mechanical outflow obstruction)
– Congestive: Endometriosis, adenomyosis (pelvic inflammation/congestion)
– Rarely associated: Ovarian cysts, DUB (unless coexistent pathology)