Although the characteristic symptoms of Parkinson’s disease (PD) involve motor functions such as tremor, rigidity, slowness of movement and loss of postural reflex, there are other neurological and psychiatric symptoms present in later stages of the disease which point to definite changes in brain function and personality of PD patients.
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Compulsive behavior, though not common, sometimes occurs in patients with Parkinson’s disease and is more likely to be associated with those on treatment with dopamine agonists, although other types of anti-Parkinson drugs may be implicated too. These impulse-control disorders are seen more often in men than in women and are more common in patients with young-onset Parkinson’s disease and may be accompanied by psychotic symptoms such as hallucinations and delusions, or mood disorders such as depression or anxiety.
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