The various embodiments described herein relate to an electrode with one or more conductive surfaces and one or more access windows allowing needles, lancets and other similar objects to pass through or near the electrode and into the underlying skin layer. The mild electrical stimulation acts to mask the pain signals caused when sharp objects penetrate the skin. The stimulation is delivered by an attachable electrical unit designed to generate both the electrical and, in some embodiments, vibration stimuli while connected to the electrode. Certain embodiments relate to an electrode with one or more electrically isolated conductive surfaces coupled to a electrical and, in some embodiments, a vibration generating unit.
