The rapid magnetic stimulation is at about 50a/us, 15Hz, 1000 pulses with 10 sec pause for ten days along the skull vault. Informed consent will be obtained. 30 patients will be recruited and sham treatment would be just applying probe without power for transcranial and for magnetic stimulation coil will be angled away. Data will be compiled by a separate blinded investigator and so with the statistics. VP shunt failure patients, which is common, will be included. Barthel's daily living index and standard cognitive tests will be used to assess results.