Recognizing child sexual abuse (CSA) in children is difficult, as there can be many hurdles in the assessment of alleged CSA. With this paper, we try to improve the recognition of CSA by discussing: (1) the difficulties regarding this matter and (2) the diagnostic evaluation of alleged CSA, combining both practical clinical recommendations based on recent research. Children are restrained to disclose CSA due to various reasons, such as fears, shame, and linguistic or verbal limitations. Associations between CSA and urogenital or gastrointestinal symptoms, internalizing and externalizing behavioral problems, post-traumatic stress symptoms, and atypical sexual behavior in children have been reported. However, these symptoms are non-specific for CSA. The majority of sexually abused children do not display signs of penetrative trauma at anogenital examination. Diagnosing a STI in a child can indicate CSA. However, other transmission routes (e.g., vertical transmission, auto-inoculation) need to be considered as well.Conclusion: The assessment consists of medical interview and child interview (parents and child separate and together) with special attention to the child’s development and behavior (problems), psychosocial situation and physical complaints, the child’s mental health, and the child’s trauma history; anogenital examination should be done in all cases of alleged CSA. The examination should be documented by photo or video graphically. Recent research suggests that videography may be the preferred method, and testing on STIs. The assessment should be done multidisciplinary by experienced professionals. Health-care professionals who care for children need to know how child protective agencies and law enforcement are organized. In case there are concerns about a child’s safety, the appropriate authorities should be alarmed.What is Known:• Sexual abuse in children often remains unrecognized in the majority of cases.What is New:• Research suggests that videographic documentation is preferred above photographic documentation for anogenital examination; observations of children’s behavioral reactions during examinations might be valuable in the evaluation of suspected sexual abuse; nucleic acid amplification testing can be used on vaginal swabs or urine samples for chlamydia and gonorrhea; the CRIES-13 and the CAPS-CA can be used to assess trauma-symptoms in children after sexual abuse.

So far, a recognizable pattern of clinical symptoms for child sexual abuse (CSA), especially in young male children, is lacking. To improve early recognition of CSA, we reviewed physical complaints, physical examination, and tests on sexually transmitted infections (STIs) in confirmed victims (predominantly preschool boys) of CSA from the Amsterdam sexual abuse case (ASAC). We retrospectively analyzed the outcomes of the primary assessment using mixed methods: descriptive analysis of physical complaints, physical exams, and STI tests from medical files and a qualitative analysis on expert’s interpretations of physical complaints and children’s behavior during physical examination. We included 54 confirmed CSA victims, median age 3.2 (0–6) years, 43 boys (80%), and 11 girls (20%). Physical complaints were reported in 50%, of which gastrointestinal and anogenital complaints were most common. None of the children showed CSA-specific genital signs at physical examination. Most prominent finding during physical examination was a deviant behavioral response (anxiety, withdrawal, too outgoing) in 15 children (28%), especially in children who experienced anal/vaginal penetration. Testing for STIs was negative. Conclusion: Physical complaints and physical signs at examinations were non-specific for CSA. Deviant behavioral reactions during physical examination were the most prominent finding. Precise observation of a child’s behavior during physical examination is needed. What is known • Child sexual abuse (CSA) affects many children on both the short and the long term but remains unrecognized in most cases. • So far, there is a lack of studies on symptom patterns of CSA in male, preschool children. What is new • None of the children showed CSA-specific findings at physical and anogenital examination; STIs were not found in the confirmed victims of CSA. • The most prominent finding was the deviant behavioral response of the children examined, especially in children who experienced anal/vaginal penetration; therefore, precise observation of a child’s behavior during physical examination is a crucial part of the evaluation of suspected CSA. Electronic supplementary materialThe online version of this article (10.1007/s00431-017-2996-7) contains supplementary material, which is available to authorized users.

Background: Child sexual abuse (CSA) is a worldwide problem affecting children of all ages and socioeconomic backgrounds. A knowledge gap exists regarding the psychological outcomes for children, boys in particular, who are abused during their early lives.Objective: To provide a descriptive psychological profile of children who experienced sexual abuse as infants or toddlers from a male daycare worker and babysitter, and to assess the psychopathological impact on their parents.Method: Parents of children involved in the Amsterdam Sexual Abuse Case (41 parents; 44 children, age range 3–11 years, 30 boys, 14 girls) completed measures on post-traumatic stress disorder (PTSD), dissociation, sexual and non-sexual behaviour problems, and attachment insecurity in their children, as well as on parental psychological well-being, 3 years after disclosure. Sexual abuse characteristics were obtained from police records.Results: We found that 3% of confirmed child victims had PTSD, 30% sexual behaviour problems, 24% internalizing problems, 27% attachment insecurity, and 18% any psychiatric disorder (including PTSD); 39% were asymptomatic. In parents, we found feelings of guilt, shame, and anger about the abuse of their child; 19% showed PTSD symptoms and 3% showed avoidant and 8% anxious attachment problems in their intimate relationship. Parental symptomatology was related to child symptomatology, except for child sexual behaviour problems. One-quarter of confirmed child victims and 45% of parents had received psychological treatment.Conclusions: Three years after disclosure, extrafamilial CSA in very young children was associated with sexual and non-sexual behaviour problems and attachment insecurity, but rarely with PTSD or dissociation. For parents it was associated with PTSD symptoms and emotional reactions. Assessments and interventions should focus on the wide spectrum of problems that follow CSA, as well as on parental psychopathology and the parent–child relationship. Future follow-up assessments in our longitudinal study should provide insights into longer-term outcomes.