Primary focal hyperhidrosis does not cause illness. Basically, you just sweat excessively. Although it is a medical condition, it's not a sign of disease or a drug interaction. People who have it are otherwise healthy. The symptoms of primary focal hyperhidrosis are fairly specific.
Potassium iodide is a component in the electrolyte of dye sensitized solar cells (DSSC) along with iodine. Potassium iodine finds its most important applications in organic synthesis mainly in the preparation of aryl iodides in the Sandmeyer reaction, starting from aryl amines.
We recommend that physicians read our 2001 guidance Potassium Iodide as a Thyroid Blocking Agent in Radiation Emergencies for more information. The FDA guidance discusses the rationale and methods of safe and effective use of KI in radiation emergencies.