The prognostic value--at diagnosis--of fever, sweating and weight loss, which enter the Ann Arbor B category, and of pruritus, whose influence on survival is still debated, were systematically reevaluated in 635 patients with Hodgkin's disease, observed between 1972 and 1982. By means of multivariate analysis an intrinsic, more negative prognostic value was demonstrated for each of the following symptoms: fever over 38 degrees C, weight loss more than 10% of body weight in the 6 months before admission, and severe pruritus, which is defined as being generalized, causing multiple excoriations and resisting local and systemic antipruritics. Patients with the mild counterparts of these symptoms, as well as sweats, were found to have a survival rate quite comparable with that of fully asymptomatic patients. A rearrangement of the Ann Arbor B constitutional symptoms which would replace sweats with severe pruritus might be more correct and more suitable for better selecting the patients who require more aggressive therapy.