For most people with a herniated disk, low back pain is the initial symptom. This pain may last for a few days, then improve. It is often followed by the eventual onset of leg pain, numbness, or weakness. This leg pain typically extends below the knee, and often into the foot and ankle.
Iron Nuggets are used for crafting very basic thaumaturgic tools, including your very first wand. Besides crafting, they can be produced as bonus material by the Infernal Furnace.
Iron Ore is a mineral Block that was added in Update 0.1.0. In Infinite Worlds, Iron can be found commonly in Caves on Levels 1-64. It can be found in Mineral Veins of 2-8 Blocks or more. It can also rarely be found above ground near exposed areas of Stone. It can be mined with a Stone Pickaxe or above.