[Postdural puncture headache: diagnosis, prevention and therapy].

Lumbar puncture (LP) is a routine technique performed for a variety of procedures, e.g. diagnosis, administration of drugs, myelography and spinal anaesthesia. Postdural puncture headache is a common complication (30-40% in diagnostic LP). Prevention can be accomplished by using small-gauge needles (< or = 25 G) or pencil-point needles (22 G). Therapy should be carried out in a stepwise approach. The first step is bedrest, use of analgetics, i.v. fluids and an adequate guidance of the patient. The second step comprises special drug therapy. Several methods of pharmacologic management have been presented in the literature, but most of these are case reports. There is a lack of large double-blind placebo-controlled studies. Theophylline, caffeine, ACTH and sumatriptan are potentially promising agents for the treatment of postdural puncture headache. The efficacy of theophylline has been proven in a double-blind and placebo-controlled study. There are a few studies and case reports reporting that caffeine p.o. and i.v. is effective in the treatment of postdural puncture headache, but recurrence of headache after caffeine therapy is frequent. ACTH acts on a complex hormonal system. The treatment with sumatriptan has been reported in only a few case reports. The third step, and one of the most effective treatments of postdural puncture headache, is the epidural blood patch. The success rate ranges between 80 and 97%.