Physical Exam in Asymptomatic Adults: Tradition or Evidence?

Although it may seem intuitive, the value of comprehensive physical examination for screening asymptomatic adults remains the subject of considerable debate.Having graduated from medical school more than 55 years ago, I have learned that physical examination is an essential part of medical practice, including during routine consultations. However, recent studies have questioned the usefulness of periodic checkups, which typically include comprehensive clinical evaluation and multiple ancillary tests, because they have not shown a consistent reduction in overall or cardiovascular mortality.A recent article in The New England Journal of Medicine (NEJM) has reignited this discussion, highlighting the potential benefits and limitations of physical examination in asymptomatic adults.Arguments in Favor of Physical ExaminationStrengthening the physician-patient relationship: Direct contact, nonverbal communication, and the ritual of physical examination can reinforce therapeutic trust. Detecting incidental findings: Thyroid nodules, heart murmurs, and abdominal masses may be identified, although there is no robust evidence that detecting these findings reduces mortality rates. Patient perception: Many patients associate annual check-ups with a sense of security and ongoing medical care. Arguments Against Physical Examination• No effect on mortality: Systematic reviews have shown that routine check-ups do not reduce mortality, and the reduction in risk factors achieved is modest.• Benefits limited to specific components: Only a limited number of physical examination components have established benefits for screening, including blood pressure measurement, clinical breast examination, pelvic examination, cervical cancer screening, visual and hearing acuity assessment in older adults, skin examination for melanoma, and abdominal palpation for aortic aneurysms in men.• Risk for false-positive findings: The low specificity of broad screening examinations can cause anxiety, lead to unnecessary testing, and increase costs without proven clinical benefit. Clinical ImplicationsA review published in JAMA emphasized that, with the exception of blood pressure measurement, BMI calculation, and cervical cancer screening, routine physical examinations have not been shown to improve relevant clinical outcomes. This evidence supports recommendations such as those from the Choosing Wisely initiative, which discourages annual check-ups with a comprehensive physical examination in asymptomatic adults without chronic diseases or specific complaints.The NEJM article emphasized that there is no definitive consensus. The decision should be individualized, weighing the relational value of the physical examination, possibility of incidental findings, and risk for false-positive results. An approach guided by the patient’s medical history may be more rational than the traditional “ head-to-toe” examination.Despite this evidence, I continue to examine all patients, whether symptomatic or asymptomatic. For me, physical examination remains an integral part of clinical practice. After all, as the saying goes, you can’t teach an old dog new tricks.This story was translated from Medscape’s Portuguese edition.