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.
11 Natural Remedies for Poison Ivy. Many a family picnic or outing has been cut short because someone ended up with a case of itchiness from coming into contact with poison ivy. Poison ivy, and its companions, poison oak, poison sumac, poison elder, poison dogwood and markweed, are the most common allergenic plants in North America. They occur in every state, except Alaska, and are common along roadsides and streams, in forests and pastures, and even in gardens.