Lithium is used for the treatment of bipolar disorder. Specifically, it is approved to treat manic episodes (but not depressive episodes). It is also approved as a maintenance treatment, which is a long-term treatment to help prevent episodes of mania or depression. Lithium has not been approved for treating bipolar disorder in children under 12 years old. Occasionally, lithium is also used  off-label  for treating other conditions.
A poison ivy rash itself isn't contagious â blister fluid doesn't contain urushiol and won't spread the rash. And you can't get poison ivy from another person unless you've touched urushiol that's still on that person or his or her clothing. 1  Symptoms. 2  Risk factors.
But thatâs not the case. The CDC estimates that 80% to 90% of adults are allergic to urushiol, the oil in poison ivy -- and poison oak and poison sumac -- that causes the reaction. It is true that you can come in contact with poison ivy and not develop a rash the first time.