Answer:Disorder of the nerve tissue: Parkinson disease
Step-by-step explanation:
Parkinson disease is a degenerative disorder of the brain. It affects the body’s movements and causes tremors, rigidity, slowness, and instability. A person with this disease may have trouble sleeping and comprehending information. The disease leads to the destruction of neurons. It also results in a consequent decrease in a chemical neurotransmitter (dopamine) that helps transmit nerve impulses to other regions of the brain. The cells in the substantia region of the brain, which help control movement, begin to degenerate. Although the disease is incurable, scientists are testing new therapies that use a precursor to dopamine to offset the decrease of dopamine in the brain.