pleasantrynoun [ C usually plural ] uk â /Ëplez.Én.tri/ us â /Ëplez.Én.tri/ formal. âº a polite and often slightly humorous remark, usually made to help other people feel relaxed: After exchanging pleasantries, the delegation revealed the purpose of their visit. Thesaurus: synonyms and related words. Informal talking & conversation. a problem shared is a problem halved idiom. blarney.
Parkinsonism is a general term that refers to a group of neurological disorders that. cause movement problems similar to those seen in Parkinsonâs disease, such as. tremors, slow movement and stiffness.
Parkinson's disease (PD) is a degenerative disorder of the central nervous system that belongs to a group of conditions called movement disorders. It is both chronic, meaning it persists over a long period of time, and progressive, meaning its symptoms grow worse over time.arkinson's disease occurs when nerve cells, or neurons, in the brain die or become impaired. Although many brain areas are affected, the most common symptoms result from the loss of neurons in an area near the base of the brain called the substantia nigra.