The âsniff a poisonâ challenge. Welcome to the âSniff a Poisonâ Challenge! Below is a list of odo(u)rs. For each different odour try to identify the poison(s) or toxin(s) that can give rise to it â then click on the odour (in blue) to show/hide the answer. If there are multiple answers, the number of answers listed is shown in brackets.
Tremors can also be caused by conditions or medicines that affect the nervous system, including Parkinson's disease, liver failure, alcoholism, mercury or arsenic poisoning, lithium, and certain antidepressants.
What causes tremor? Generally, tremor is caused by a problem in the deep parts of the brain that control movements. Most types of tremor have no known cause, although there are some forms that appear to be inherited and run in families. Tremor can occur on its own or be a symptom associated with a number of neurological disorders, including: 1  multiple sclerosis. 2  stroke. 3  traumatic brain injury. 4  neurodegenerative diseases that affect parts of the brain (e.g., Parkinson's disease).