For many I suffered a lot of tension in my head, primarily at my left side, where I was diagnosed with labrynthitis. This means that the labyrinth, or equilibrium organ is affected by something, usually a virus. I started to use the ___ Zapper on my head and neck, when I discovered that the lymph gland under the left cheek felt big and hard. I know that viruses can hold out in lymph gland, and sporadically leave to attack the body. I was guessing that maybe they were traveling to the area of my left labyrinth, which is after all only a couple of inches away. I also have sore throats every winter, starting mostly on my left side. Putting it all together I held the left copper handhold (with damp cloth as bare copper would leave burn marks; the skin in the neck and head is more sensitive) above the lymph gland for just one or two minutes per treatment, and also above and behind my left ear. The nausea and tension I had was disappearing fast, in a matter of days. After about two weeks I was 95% better. The left lymph node had gone back to normal. I figure that the viruses (or whatever little critters they were) got zapped, and my body will now need to heal slowly. That takes time. Hulda Clark recommends continuing the treatments in order to prevent re-infection, until the body has repaired the damage. This usually takes three months at the least. name not given date not available