At least six people die in new tremors, weeks after massive quakes devastated the same region.

For Washington County Attorney Pete Orput, the changes happened slowly. First, there was a slight tremor in his hands that was especially bad in the morning. “It got so bad, I couldn’t drink a cup …

Parkinson's disease (PD), or simply Parkinson's, is a chronic degenerative disorder of the central nervous system that mainly affects the motor system. The symptoms usually emerge slowly, and as the disease worsens, non-motor symptoms become more common. Early symptoms are tremor, rigidity, slowness of movement, and difficulty with walking. Problems may also arise with cognition, behaviour, sleep, and sensory systems. Parkinson's disease dementia becomes common in advanced stages of the disease. The motor symptoms of the disease result from the death of nerve cells in the substantia nigra, a region of the midbrain that supplies dopamine to the basal ganglia. The cause of this cell death is poorly understood, but involves the aggregation of the protein alpha-synuclein into Lewy bodies within the neurons. Collectively, the main motor symptoms are known as parkinsonism or a parkinsonian syndrome.The cause of PD is unknown, but a combination of genetic and environmental factors are believed to play a role. Those with an affected family member are at an increased risk of getting the disease, with certain genes known to be...

Dystonia is a neurological hyperkinetic movement disorder in which sustained or repetitive muscle contractions result in twisting and repetitive movements or abnormal fixed postures. The movements may resemble a tremor. Dystonia is often intensified or exacerbated by physical activity, and symptoms may progress into adjacent muscles.The disorder may be hereditary or caused by other factors such as birth-related or other physical trauma, infection, poisoning (e.g., lead poisoning) or reaction to pharmaceutical drugs, particularly neuroleptics, or stress. Treatment must be highly customized to the needs of the individual and may include oral medications, chemodenervation botulinum neurotoxin injections, physical therapy, or other supportive therapies, and surgical procedures such as deep brain stimulation. Classification There are multiple types of dystonia, and many diseases and conditions may cause dystonia. Dystonia is classified by: Clinical characteristics such as age of onset, body distribution, nature of the symptoms, and associated features such as additional...