Homoeopaths’ consultations for chronic conditions include an extremely detailed case history. Patients are asked to describe their medical history and current symptoms. Particular attention is paid to the “modalities” of presenting symptoms—that is, whether they change according to the weather, time of day, season, and so on. Information is also gathered about mood and behaviour, likes and dislikes, responses to stress, personality, and reactions to food. The overall aim of the history taking is to build up a “symptom picture” of the patient. This is matched with a “drug picture” described in the homoeopathic Materia medica. On this basis, one or more homoeopathic medicines are prescribed, usually in pill form. Sometimes treatment consists of only one or two doses. In other cases a regular daily dose is used.