Martorell A, et al. - In this cross-sectional multicentre study involving 143 patients, researchers determined the usefulness of ultrasound as a diagnostic tool in hidradenitis suppurativa (HS) compared with clinical examination and evaluated the subsequent modification of disease management. According to results, 44.7% changed to a more severe stage in patients with stage I classification as determined by clinical examination. Clinical examination showed that 44.1%, 54.5% and 1.4% of patients would maintain, increase or decrease treatment, respectively. By identifying subclinical disease, ultrasound can alter clinical staging and therapeutic management in HS.