Parkinson's disease is a neurodegenerative disease that predominantly affects the neurons that produce dopamine in a certain area of ​​the brain called the Substantia Nigra. Parkinson's disease is a progressive disease of the nervous system that affects the movement of different parts of the body. It happens slowly, starting with just a tremor in one hand. While tremor may be the best-known sign of Parkinson's disease, the disorder also causes stiffness or slow movement. In the early stages of Parkinson's disease your face may show little or no expression or your arms may not swing when you walk. Your speech may become weak or slurred. The main cause of Parkinson's disease may be that some nerve cells in the brain slowly deteriorate or die. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an original essayMany of these are due to a loss of neurons that produce a chemical messenger in the brain called dopamine. When dopamine levels decrease, it causes abnormal brain activity. The true cause of Parkinson's disease is unknown, but there are some causes that could contribute to it. Many scientists have discovered that certain genetic mutations can cause Parkinson's disease. Certain triggers could also be a cause of Parkinson's disease. Being exposed to certain toxins can increase your risk of developing Parkinson's disease. Another cause could be the presence of tumors of specific substances within the brain cells that are markers of Parkinson's disease. These are called Lewy bodies, and scientists believe that these Lewy bodies play an important role in causing Parkinson's disease. Risk factors such as aging, heredity, gender, and exposure to toxins could also lead to Parkinson's disease. The symptoms of Parkinson's disease might be different between people. Symptoms could be tremor, slowed movement, muscle stiffness, and changes in speech. The tremor could be a tremor of a limb often in the hand or fingers. You may notice a back and forth motion, making simple tasks difficult and time-consuming. Slow movement could make simple tasks difficult. Stiff muscles are stiffness that can occur anywhere in the body. Stiff muscles can limit range of motion and cause pain. You may have speech problems due to Parkinson's disease. Many insult or hesitate before speaking. Your doctor will diagnose Parkinson's disease based on your medical history, an examination of your signs and symptoms, and a neurological and physical exam. Your doctor may order tests such as blood tests to rule out other conditions that may be causing your symptoms. Imaging tests such as MRI, brain ultrasound, SPECT and PET scans can also be used to rule out other disorders. Parkinson's disease cannot be cured, but medications can help control symptoms. Medication can help you manage walking, movement, and tremor problems. These drugs increase or replace dopamine. Please note: this is just an example. Get a custom paper from our expert writers now. Get a custom essay. Different types of medications may include: Carbidopa-Levodopa, carbidopa-levodopa infusion, and dopamine agonists. Carbidopa-levodopa is the most effective drug against Parkinson's disease. It is a natural chemical that passes into the brain and is converted into dopamine. Side effects can.