Various embodiments provide an apparatus system method for treating neurological conditions by delivering solid form medication to the ventricles or other areas of the brain.Particular embodiments provide an apparatus and method for treating epilepsy and other neurological conditions by delivering solid form medication to ventricles in the brain wherein the medication is contained in a diffusion chamber so as to allow the medication to dissolve in the cerebrospinal fluid of the brain and then diffuse out of the diffusion chamber to be delivered to the ventricles and brain tissue. In one or more embodiments , portions of apparatus have sufficient flexibility to conform to the shape of the ventricles of the brain when advanced into them and/or to not cause deformation of the ventricle sufficient to cause a significant physiologic effect.
