Parkinson's disease
Table:
Parkinson's disease
Other names	Parkinson disease, idiopathic or primary parkinsonism, hypokinetic rigid syndrome, paralysis agitans, shaking palsy

Illustration of Parkinson's disease by William Richard Gowers, first published in A Manual of Diseases of the Nervous System (1886)
Specialty	Neurology
Symptoms	Shaking, rigidity, slowness of movement, difficulty walking[1]
Complications	Dementia, depression, anxiety[2]
Usual onset	Age over 60[1][3]
Causes	Unknown[4]
Risk factors	Pesticide exposure, head injuries[4]
Diagnostic method	Based on symptoms[1]
Differential diagnosis	Dementia with Lewy bodies, progressive supranuclear palsy, essential tremor, antipsychotic use[5]
Treatment	Medications, surgery[1]
Medication	L-DOPA, dopamine agonists[2]
Prognosis	Life expectancy ~ 15 years[6]
Frequency	6.2 million (2015)[7]
Deaths	117,400 (2015)[8]

With reference to the table, determine whether the statement is entailed, neutral, or refuted. Give your final answer in JSON format {"answer": "YOUR ANSWER"}.

Assertion: Someone with Parkinson's disease will live a normal length life.

answer: refuted