Essay: The nocebo effect - poorly known but getting stronger (P. Tyrer). 1. Central nervous system stimulants and anorectic agents (R.P. Sequeira). 2. Antidepressant drugs (M. Elphick). 3. Lithium (M. Schou). 4. Drugs of abuse (A.I. Green, E.J. Watsky and C. Salzman). 5. Hypnotics and sedatives (T.C. Jerram). 6. Antipsychotic drugs (D. Capella and J.-R. Laporte). 7. Anticonvulsant drugs (J.C. Mucklow). 8. Opioid analgesics and narcotic antagonists (A.H. Ghodse and A.K. Vohra). 9. Antipyretic analgesics (G. Agnelli and B. Cosmi). 10. Anti-inflammatory analgesics and drugs used in rheumatoid arthritis and gout (A. Del Favero). 11. General anesthetics and therapeutic gases (M.N.G. Dukes). 12. Local anesthetics (A. Chiffoleau and C. Larousse). 13. Neuromuscular blocking agents and skeletal muscle relaxants (F.J. Richardson and S. Agoston). 14. Drugs affecting autonomic functions or the extrapyramidal system (I. Lunde). 15. Dermatological drugs, topical agents and cosmetics (A.C. de Groot). 16. Antihistamines (I. Lunde). 17. Antiallergic and antitussive drugs (F.A. Nelemans). 18. Positive inotropic drugs and drugs used in dysrhythmias (J.K. Aronson). 19. beta-Adrenoceptor and antianginal drugs (L. Offerhaus). 20. Drugs acting on the cerebral and peripheral circulation (R. Verhaeghe and M. Verstraete). 21. Antihypertensive drugs (J.A. Steiner). 22. Diuretic drugs (G.T. McInnes). 23. Metals (P.L.C.M. van Riel). 24. Metal antagonists (R.H.B. Meyboom and I.A. Jaffe). 25. Antiseptic drugs and disinfectants (G. Reybrouck). 26. Penicillins, cephalosporins and tetracyclines (T. Midtvedt). 27. Miscellaneous antibiotics (T. Midtvedt). 28. Antifungal drugs (V.K. Lephakhin and A.V. Astakhova). 29. Antiprotozoal drugs (I. Nir). 30. Miscellaneous antibacterial and antiviral drugs (J.E. Idaanpaan-Heikkila and K.M. Aranko). 31. Drugs used in tuberculosis and leprosy (C.J. Ellis). 32. Anthelminthic drugs (A.G.C. Bauer). 33. Enzymes and enzyme inhibitors (M.N.G. Dukes). 34. Immunobiological preparations (S. Dittmann). 35. Blood and blood products (F.A. Ala). 36. Intravenous and parenteral infusions (P.I. Folb). 37. Drugs affecting blood coagulation and hemostasis (J. Vermylen, Ph. Vanhove and M. Verstraete). 38. Gastrointestinal drugs (M.N.G. Dukes). 39. Immunomodulating agents (J. Descotes and J.-Cl. Evreux). 40. Vitamins (H.D. Reuter). 41. Corticotrophins and corticosteriods (S. Erill). 42. Sex hormones and related compounds including oral contraceptives (K.-W. von Eickstedt). 43. Thyroid hormones, iodine and antithyroid drugs (R. Bouillon). 44. Insulin, glucagon and hypoglycemic drugs (H.M.J. Krans). 45. Miscellaneous hormones (R. Bouillon). 46. Drugs affecting lipid metabolism (I. Aursnes). 47. Cytostatics and immunosuppressive drugs (A. Stanley and G. Blackledge). 48. Radiological contrast media and radiopharmaceuticals (G. Ansell). 49. Drugs used in ocular treatment (B.C.P. Polak). 50. Drugs used in non-orthodox medicine (P.A.G.M. de Smet). 51.