Number sign. Not to be confused with the Chinese character äº, the sharp sign (â¯), the viewdata square (â), the numero sign (â), the equal and parallel to symbol (â) or the game Tic-tac-toe's grid. The symbol # is most commonly known as the number sign, hash, or pound sign.
The poison ivy rash is not contagious. When a person touches the poison ivy leaf, a substance on the surface of the leaf (a resin) rubs off. Over the next 48 to 72 hours the skin reacts to the resin by becoming red and developing bumps and blisters at and around the site where the resin was.
For instance, scabies rash is highly contagious and can be caught by sharing clothing, skin contact and sleeping in the bed of someone infected. Poison ivy is spread by an oil from the plant and if the clothing that touched the oil, contacts another person, the person can break out in the rash. Fungal rashes like athletes foot fungus can be spread in a locker room.