Doctor S. Pobedinsky. Writing articles on medical topics. mail : pobedinskiy71 on yandex.ru
Vascular Parkinsonism Syndrome: Symptoms, Causes, Treatment, and Diagnostic Errors
Vascular parkinsonism (VP) is a secondary condition in which a patient develops movement disorders characteristic of Parkinson’s disease, but caused not by neuronal degeneration but by damage to the blood vessels of the brain. Unlike classical parkinsonism, where the primary cause is the death of dopamine cells, here symptoms arise from impaired cerebral circulation. According to various studies, VP accounts for 4% to 12% of all parkinsonism cases.
1. What Are the Symptoms of Vascular Parkinsonism, and What Are the First Manifestations?
Vascular parkinsonism has characteristic clinical features that distinguish it from Parkinson’s disease. The main feature is the predominance of gait and balance disorders over tremor.
First manifestations:
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Vascular Parkinsonism
Changes in gait — steps become short, shuffling, the person walks slowly.
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Instability — unsteadiness appears when turning, standing up from a chair, walking on stairs.
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Slowness of movement (bradykinesia) — everything takes more time.
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Early falls — unexplained falls without loss of consciousness.
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Urinary disorders — imperative urges, urinary incontinence. This is a very characteristic early sign.
Advanced symptoms:
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«Lower-body parkinsonism» — predominant involvement of the lower limbs, arms are less affected.
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Freezing — sudden «freezing» when walking, especially when turning or passing through a doorway.
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Wide stance when walking — unlike the narrow «shuffling» gait in Parkinson’s disease.
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Pyramidal signs — increased tendon reflexes, Babinski sign.
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Pseudobulbar affect — inappropriate laughing or crying.
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Speech and swallowing disorders — dysarthria, dysphagia.
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Cognitive impairment up to dementia.
What is NOT characteristic:
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Resting tremor — rare or absent.
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Good response to levodopa — in most patients the effect is weak or absent.
2. Causes of Vascular Parkinsonism Syndrome
Vascular parkinsonism develops due to impaired blood supply to deep brain structures. Main mechanisms:
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Lacunar infarcts — small strokes in the basal ganglia, thalamus, white matter.
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Small vessel disease — chronic ischemia of the white matter (leukoaraiosis).
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Large strokes affecting motor pathways.
Risk factors:
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Arterial hypertension — the most significant factor.
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Type 2 diabetes mellitus.
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Atherosclerosis and high cholesterol levels.
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Previous strokes or transient ischemic attacks.
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Atrial fibrillation.
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Smoking and alcohol abuse.
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Age — more often after 60–70 years.
Not everyone who has had a stroke will develop vascular parkinsonism. But the more risk factors and the worse blood pressure is controlled, the higher the probability.
3. What Are the Health Dangers?
Vascular parkinsonism significantly reduces quality of life and leads to serious consequences:
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Mobility impairments — the patient has difficulty moving, becomes dependent on outside help.
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Increased risk of falls — with possible fractures, especially hip fractures.
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Cognitive deficit — from mild memory impairment to vascular dementia.
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Urinary incontinence — social maladjustment, risk of urinary tract infections.
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Depression and anxiety — significantly worsen quality of life.
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Swallowing disorders — risk of aspiration pneumonia.
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Progressive course — without control of vascular factors, the risk of recurrent strokes remains.
Quality of life in VP is significantly reduced and correlates with motor and non-motor symptoms.
4. Treatment of Vascular Parkinsonism Syndrome
It is impossible to completely cure vascular parkinsonism, but it is possible to slow progression and improve quality of life.
1. Control of vascular risk factors (the basis of treatment):
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Blood pressure — target figures are selected individually, usually below 140/90 mmHg.
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Diabetes mellitus — glycemic control.
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Cholesterol — statins when indicated.
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Antithrombotic therapy — aspirin or other drugs to prevent recurrent strokes.
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Smoking and alcohol cessation.
2. Treatment of motor disorders:
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Levodopa — may be prescribed on a trial basis. Some patients (20–38%) show a partial response. If there is no significant improvement after 2–3 months, the drug is discontinued.
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Physiotherapy and exercise therapy — the key method. Exercises for gait, balance, step training.
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Occupational therapy — adaptation to daily life, use of walkers.
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Speech therapy — for speech and swallowing disorders.
3. Treatment of cognitive impairment:
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Acetylcholinesterase inhibitors (donepezil, rivastigmine).
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Memantine for moderate to severe dementia.
4. Symptomatic treatment:
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For urinary incontinence — urologist consultation.
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For depression — antidepressants (SSRIs), psychotherapy.
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For spasticity — muscle relaxants.
5. Prospects for Treating Vascular Parkinsonism
The prognosis for vascular parkinsonism is variable. Some patients can maintain an acceptable quality of life with adequate treatment. However, overall the disease is considered progressive.
Response to levodopa — weak or absent in most patients. Only a portion (up to 50%) show improvement, but long-term effectiveness is observed in only a few. In patients with isolated basal ganglia infarcts, the response to levodopa may be better.
The key factor for success is control of vascular risks. Without normalization of blood pressure, sugar, and cholesterol, the disease will progress faster. Early diagnosis and aggressive treatment of vascular factors is the only way to slow progression.
Survival depends on cardiovascular health, the severity of previous strokes, and the patient’s general condition.
6. Clinical Case of a Patient with Vascular Parkinsonism Syndrome (from practice)
An 82-year-old female patient with arterial hypertension presented with complaints of difficulty walking and balance impairment that had progressed over a year. The main problem was delayed initiation of movement and turning. Symptoms characteristic of Parkinson’s disease (constipation, anosmia, sleep disorders) were absent. On examination: wide, slowed gait with reduced step length, pronounced postural instability, episodes of freezing. There was no resting tremor. Reflexes were increased, bilateral Babinski sign. MRI revealed chronic vascular changes in the basal ganglia and substantia nigra.
Diagnosis: vascular parkinsonism.
Treatment: levodopa (carbidopa/levodopa) was prescribed at a dose of 3 × 100 mg. After starting therapy, freezing episodes significantly decreased, gait moderately improved — the patient was able to perform daily activities without support. The MDS-UPDRS Part II score improved from 23 points (in the «off» state) to 15 points (in the «on» state).
Conclusion: although most patients with VP have a weak response to levodopa, in some cases (especially with basal ganglia involvement) significant improvement may be observed. This emphasizes the importance of a trial prescription of the drug.
7. What Are the Errors in Diagnosis and Treatment of Patients with Vascular Parkinsonism Syndrome?
Vascular parkinsonism is one of the most frequently misdiagnosed neurological diagnoses. Main errors:
1. Overdiagnosis. In Russia, overdiagnosis of VP is observed: in elderly patients with a vascular history and parkinsonism, the diagnosis is made automatically, without proper differentiation. The rate of misdiagnosis of VP as Parkinson’s disease is 15–30% .
2. Irrational prescription of levodopa. Levodopa is prescribed to all patients with parkinsonism without considering that in VP it is often ineffective.
3. Unjustified use of vasoactive and nootropic drugs without proven efficacy.
4. Unjustified hospitalizations — patients with VP are often hospitalized without indications.
5. Difficulty distinguishing VP from Parkinson’s disease. In 15–30% of patients with Parkinson’s disease, VP is misdiagnosed, and vice versa. Cases of combined Parkinson’s disease and cerebrovascular disease are especially difficult.
6. Ignoring neuroimaging. Without brain MRI, it is impossible to assess the presence and degree of vascular changes, which leads to diagnostic errors.
7. Insufficient control of vascular risk factors. Doctors often focus on symptomatic treatment, forgetting the main thing — normalization of blood pressure, sugar, and cholesterol.
Recommendation: for correct diagnosis, a combination of the clinical picture (lower-body parkinsonism, absence of tremor, poor response to levodopa) and neuroimaging data (leukoaraiosis, lacunar infarcts) is necessary. Differential diagnosis should include Parkinson’s disease, progressive supranuclear palsy, and normal pressure hydrocephalus.
Doctor S. Pobedinsky. Writing articles on medical topics.
Keywords (English):
vascular parkinsonism, vascular parkinsonism syndrome, lower-body parkinsonism, freezing, vascular dementia, difference from Parkinson’s disease, treatment of vascular parkinsonism, levodopa, stroke risk factors, neurologist, rehabilitation, diagnostic errors, overdiagnosis, lacunar infarcts, leukoaraiosis
