Parkinson's disease is a common neurodegenerative disorder affecting middle-aged and elderly individuals. Epidemiological studies indicate a prevalence rate of 1.7% among Chinese adults aged 65 and older. With China's growing middle-aged and elderly population, the number of Parkinson's patients is projected to rise, warranting significant attention.Why does Parkinson's disease occur? What are its primary symptoms? Current understanding suggests Parkinson's disease results from the progressive degeneration of dopaminergic neurons in the substantia nigra and the formation of Lewy bodies. This leads to reduced dopamine levels in the striatal region of the brain and an imbalance between dopamine and acetylcholine neurotransmitters.Symptoms encompass both motor and non-motor manifestations. Motor symptoms include tremor, rigidity, bradykinesia, and postural instability. Non-motor symptoms encompass sleep disorders (insomnia, REM sleep behavior disorder, excessive daytime sleepiness, and restless legs syndrome),sensory disturbances (hyposmia, pain, or numbness), autonomic dysfunction (constipation, urinary problems, orthostatic hypotension), and cognitive/psychiatric issues (depression, anxiety, hallucinations, delusions, compulsive behaviors, cognitive decline, and dementia).
Treatment Approaches for Parkinson's Disease
Current treatment methods for Parkinson's disease encompass medication, surgical intervention, botulinum toxin therapy, exercise therapy, psychological intervention, and caregiving support.Pharmacotherapy serves as the primary treatment in the early stages of Parkinson's disease, while surgical intervention provides an effective supplement when medication proves inadequate. Botulinum toxin injections are an effective method for treating localized spasticity and dystonia. Exercise and rehabilitation therapy, psychological intervention, and caregiving are applicable throughout the entire course of Parkinson's disease management.Therefore, when clinically feasible, establishing a multidisciplinary team comprising neurologists, functional neurosurgeons, neuropsychologists, rehabilitation specialists, and even community general practitioners can more effectively treat and manage Parkinson's disease patients, yielding greater benefits for symptom improvement and enhanced quality of life.Treatment should adhere to evidence-based medicine while emphasizing individualization. Drug regimens vary based on each patient's predominant symptoms (tremor-dominant or rigidity-bradykinesia-dominant) and require comprehensive consideration of factors including disease severity, age at onset, employment status, presence of cognitive impairment or comorbidities, potential adverse drug reactions, patient preferences, and financial capacity.Early treatment typically involves monotherapy, though low-dose combination therapy using two drugs with different mechanisms of action may also be employed. This approach aims to achieve optimal efficacy with longer duration of effect while minimizing adverse reactions and the incidence of motor complications.In mid-to-late stage Parkinson's disease, clinical manifestations become more complex, influenced by disease progression as well as medication side effects or motor complications. Treatment must continue to improve motor symptoms while effectively managing motor complications and non-motor symptoms.
Non-motor symptoms may emerge at any stage of Parkinson's disease. Certain non-motor symptoms, such as hyposmia, REM sleep behavior disorder, constipation, and depression, can appear earlier than motor symptoms or fluctuate alongside motor fluctuations, significantly impacting patients' quality of life. Therefore, managing non-motor symptoms is essential alongside managing motor symptoms in Parkinson's disease patients.
When is surgical intervention necessary?
Early-stage Parkinson's disease responds remarkably well to medication, a period we refer to as the "honeymoon phase" of drug therapy, lasting approximately 4 to 5 years. As the disease progresses, medication efficacy significantly diminishes, or severe symptom fluctuations or dyskinesias may develop. At this stage, surgical treatment becomes necessary. Deep Brain Stimulation (DBS),commonly known as a "brain pacemaker," involves implanting stimulating electrodes in specific neural nuclei or brain regions. Through pulsed electrical stimulation, it modulates the function of these nuclei or areas to alleviate symptoms. Due to its minimally invasive nature, safety, and adjustability, it has become the primary surgical treatment for Parkinson's disease. It significantly improves motor symptoms, enhances patients' quality of life, and provides them with a second "honeymoon period."Preoperative assessment is crucial for determining surgical suitability, evaluating risks, identifying optimal targets, and predicting postoperative efficacy. This assessment is typically conducted jointly by neurologists and neurosurgeons, with involvement from anesthesiologists and radiologists as needed.DBS surgery must be performed by experienced neurosurgeons. Precise electrode placement is the most critical factor for surgical success. Surgeons ensure optimal electrode positioning through intraoperative electrophysiological monitoring and patient feedback.Postoperative programming is another critical step for achieving optimal outcomes. It involves selecting the optimal stimulation contact point and parameters (appropriate voltage, pulse width, and frequency) to maximize symptom improvement while minimizing side effects.Physicians can remotely adjust patient stimulator parameters online—known as remote programming—offering convenience to patients living far from hospitals, facing poor transportation, or experiencing mobility challenges. This capability proved invaluable during the COVID-19 pandemic. Post-DBS, medication regimens often require adjustment, potentially reducing dosage and drug types while minimizing side effects and slowing disease progression.Comprehensive postoperative care is essential and requires collaboration with departments such as Rehabilitation Medicine, Nutrition, and Traditional Chinese Medicine.
Care and Nursing Are Crucial
For Parkinson's disease patients, beyond specialized medication and surgical interventions, scientific nursing plays a vital role in maintaining quality of life. Such care often provides adjunctive therapeutic benefits by effectively controlling disease progression and alleviating symptoms. It also significantly reduces the risk of accidents like aspiration or falls. Comprehensive care should address both motor and non-motor symptoms, encompassing medication management, dietary guidance, psychological support, and rehabilitation training.Educate patients on medication usage and precautions to avoid adverse drug reactions; develop targeted dietary plans to improve nutritional status and alleviate symptoms like constipation; promptly assess psychological well-being, provide positive guidance to regulate negative emotions, and enhance quality of life. Collaborate with family members to encourage rehabilitation exercises, thereby maintaining motor function and improving self-care abilities.
There is no universally fixed treatment protocol for Parkinson's disease. Treatment needs vary among patients and even within the same patient across different disease stages. Scientists worldwide are actively exploring improved therapies. Beyond developing new drugs, breakthroughs in gene therapy and neural stem cell transplantation hold promise for offering enhanced treatment options to Parkinson's patients in the future.