In one line
Gender-based violence is a population-level public-health emergency that surfaces as ordinary gynaecological and obstetric presentations, and the consultant's task is to hold three frames at once — the social determinants that produce the disease, the time-critical clinical-forensic response to the woman in front of you (HIV PEP within 72 hours, emergency contraception within 120 hours, evidence to a court standard), and the prevention agenda that should make the next case unnecessary.
This chapter sits one level above the recognition-and-acute-drill groundwork covered for the Intermediate exam — revise the safe-enquiry technique, the J88, the acute sexual-assault sequence and the statutory architecture at the Intermediate gender-based violence chapter. The work here is the consultant layer: reasoning about GBV as a determinant of women's health at population scale, defending the evidence behind a screening or response decision, and arguing the medico-legal calls a specialist is expected to own.
Mechanism & pathophysiology
The mechanism of GBV is social, not cellular, and a consultant who reaches only for individual-level explanations will misread the epidemiology. Violence against women is produced by an ecological cascade: societal norms that sanction male control over women, community-level poverty and weak sanctions, relationship-level conflict and male dominance, and individual histories of childhood abuse and harmful alcohol use. South Africa concentrates almost every one of these drivers — entrenched gender inequity, extreme income inequality, a normalisation of violence inherited from a violent history, high firearm availability and pervasive alcohol misuse — which is why the country sits at the extreme tail of the global distribution rather than merely above average.
The "pathophysiology" that matters clinically is how this social exposure converts into measurable disease in the woman's body. Three pathways do most of the work:
- Direct injury. Blunt and penetrating trauma, strangulation, and the obstetric consequences of abdominal trauma — placental abruption, preterm birth, low birth weight, fetal loss. Strangulation deserves separate weight: it is a sentinel marker of near-lethal violence and a predictor of subsequent femicide, and it can cause delayed airway or neurological compromise with minimal external signs.
- Reproductive coercion and its sequelae. Forced or coerced sex, contraceptive sabotage and forced continuation or termination of pregnancy generate unintended pregnancy, repeat unsafe abortion, and recurrent sexually transmitted infection. The syndemic interaction with HIV is the SA-defining feature: violence increases HIV acquisition (through forced sex, inability to negotiate condom use, and the biological vulnerability of genital trauma) and HIV-positive women face elevated violence on disclosure — the two epidemics amplify each other.
- Chronic stress physiology and mental ill-health. Sustained exposure drives depression, anxiety, post-traumatic stress disorder, substance use and suicidality, which in turn worsen antenatal engagement, adherence and obstetric outcome. In pregnancy this is not abstract: violence may begin or escalate in pregnancy, and intimate-partner homicide is a recognised contributor to maternal mortality.
The unifying idea is that GBV behaves like any other major determinant of women's health — it has a dose-response relationship with poor outcomes, it clusters with poverty and HIV, and it is, in principle, preventable. Treating each presentation as an isolated clinical event misses that the woman with recurrent STI, the late-booker, the unexplained abruption and the woman with intractable "non-specific" pelvic pain may be expressions of the same upstream cause.
The social-determinants lens does the same explanatory work for women's health more broadly that the violence model does for GBV specifically. Health is patterned by the conditions in which women are born, grow, live and work — income, education, food security, water and sanitation, housing, access to services — and these gradients explain more of the variance in maternal and reproductive outcomes than any single clinical factor. In South Africa the gradient is steep and stratified along the historical fault lines of race and geography: a rural woman in a former homeland district faces a maternal-mortality risk, an HIV exposure and a violence exposure that a wealthy urban woman does not, and the difference is produced upstream of any clinic. The public-health frame insists that the determinant, not just the disease, is a legitimate target — that contraceptive stock-outs, the distance to the nearest functioning theatre, and the alcohol outlet density of a neighbourhood are as much "pathophysiology" of poor women's health as any biochemical pathway. A consultant who can name the gradient and its drivers reasons about the population the patient came from, not only the patient.
Assessment
Assessment operates at two altitudes — the individual encounter and the population the patient represents — and a consultant is expected to move between them.
The clinical clues to GBV are a pattern, not a complaint. The presentations that should prompt enquiry include injuries inconsistent with the given history, delay in seeking care, repeat attendance with vague or somatic complaints, recurrent or treatment-resistant STI, unintended or concealed pregnancy, late or absent antenatal booking, a partner who attends every visit and answers for her, chronic pelvic pain without pathology, and depression, substance use or self-harm. None is diagnostic alone; the skill is in reading the constellation.
Routine universal screening versus clinical enquiry. This is a genuine point of guideline divergence. WHO does not recommend universal screening (asking every woman in every health-care encounter), because trials have not shown that screening alone improves outcomes and it carries opportunity and safety costs; WHO instead recommends clinical enquiry — asking when assessing conditions that may be caused or complicated by IPV. Several national bodies (and many antenatal programmes) favour routine antenatal enquiry on the grounds that pregnancy is a window of both heightened risk and reliable contact with the health system. The defensible consultant position is to state the distinction explicitly: case-finding driven by clinical suspicion is universally supported; whole-population screening is not endorsed by WHO on current evidence, and any enquiry must meet minimum safety conditions (privacy, no third party, a trained responder and a referral pathway in place) before it is offered.
The enquiry itself must be safe before it is thorough. See her alone — the controlling companion may be the perpetrator — in a private, uninterrupted space with a chaperone for examination. Ask once, gently, without expressions of doubt. Establish stability and immediate safety first; resuscitation of major trauma, haemorrhage and strangulation overrides both history-taking and any forensic process.
Quantify lethality risk, because it changes the urgency of the protective response: a history of strangulation, escalating violence, weapons in the home, explicit threats to kill, recent separation, and pregnancy itself are recognised markers that the next assault may be fatal. The femicide surveillance data give this a hard edge — intimate-partner femicide is the leading category of female homicide in South Africa, so a woman volunteering these markers is describing a measurable mortality risk, not a relationship difficulty, and the assessment must treat it as such.
Document to a forensic standard from the first contact. A consultant supervising a service is responsible for the quality of its medico-legal records, which may be the only objective account read in court years later. The principles: record observations in objective descriptive terms with measurements and a body map; quote the survivor's account in her own words and attribute it as history; never write conclusory opinions that cannot be defended (the absence of genital injury is not evidence of consent, and writing it as such is a serious error); complete the J88 contemporaneously and legibly; and maintain an unbroken chain of custody for every specimen — unlabelled, unsealed or improperly handled evidence is forensically worthless and can sink a prosecution.