Poison ivy, oak, and sumac facts. 1  Poison ivy, poison oak, and poison sumac are plants than can cause an itchy rash upon contact. 2  A substance called urushiol, found in these plants, causes the rash. 3  The rash is not contagious.  The rash usually disappears in one to three weeks.
Following is a list of causes or underlying conditions (see also Misdiagnosis of underlying causes of Tremor) that could possibly cause Tremor includes: 1  Parkinson's disease. 2  Drug-induced tremor. 3  Parkinson disease 8 - tremors.  Parkinson disease 13 1  - tremors. Neuhauser-Daly-Magnelli syndrome - tremors.  Multiple endocrine neoplasia - Tremors.
There are many things that may cause leg tremors. For example, a person may develop them in relation to a central nervous system disease or even because his thyroid gland isn't functioning properly. In some cases, medication may cause leg tremors, and even drinking to excess may stimulate them. Sometimes a person develops tremors because of an inherited condition. Unfortunately, there are even some cases in which doctors are unable to determine why the patient is experiencing tremors.