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Parkinson's Disease is a progressive neurological disease affecting muscle control and movement. It occurs when cells are destroyed in certain parts of the brain stem. These cells should release dopamine, an essential neurotransmitter (a chemical messenger in the brain). Loss of dopamine in the affected part of the brain is the primary cause of Parkinson's. The nerves and muscles controlling movement and coordination are damaged, and that results in the major symptoms characteristic of the disease. The most familiar symptom is a hand tremor. Parkinson's progresses slowly and is not usually fatal. The symptoms can often be controlled with medication. Parkinson's is rare in people younger than forty.
The cause of Parkinson's disease is currently unknown. Researchers are trying to discover why the brain of the affected person loses its dopamine, with studies showing that the underlying causes are probably both genetic and environmental. It may be as long as five years after the loss of dopamine that the first noticeable symptoms appear.
Several other ailments mimic the symptoms of Parkinson's, and your health professional will be the best resource for information on this aspect.
A July 1999 story out of the Mayo Clinic in Rochester, Minnesota tells of a new procedure that - combining an experimental drug with a widely available brain-scan device - shows promise of detecting Parkinson's before symptoms appear. Detecting the disease in its early stages with this new procedure may help stop the illness in its tracks, the study's authors report, if drugs under development prove effective in preventing symptoms like tremors and rigid movement. "For every case of Parkinson's disease in the elderly, it's estimated that there are 10 presymptomatic cases walking around," according to the lead investigator, the clinic's Dr. Demetrius M. Maraganore.
When a person takes a dose of beta CIT, the radioactive medication used in the study, it binds to the dopamine-dependent brain cells. Using a scan called Single-Photon Emission Computed Tomography (SPECT), the researchers were able to detect beta CIT in the brain. Most large medical centers have SPECT cameras.
To over-simplify, lower levels of beta CIT indicates a predisposition to Parkinson's. For the test to be useful, Dr. Maraganore cautioned, drugs under development that aim to prevent the damage caused by Parkinson's will have to be proven effective.
Parkinson's disease currently affects approximately 1 to 1.5 million people in the US.
Symptoms may be present on one or both sides of the body. The person's intellectual ability is unchanged until the advanced stages of the illness, when it deteriorates slowly. The following are a list of symptoms to be aware of:
Tremors: A common early symptom is a tremor in one finger that eventually spreads to involve the whole arm. Tremors are most noticeable when the person is at rest, and may involve a distinctive movement in which the thumb and the index finger rub together rhythmically (four or five times a second) in what is described as the 'pill-rolling' tremor. Tremors can also occur in the head, lips, tongue, and feet. Some patients report experiencing internal tremors, which may occur several times a week, but are of short duration (under half an hour). Tremors do not occur during sleep.
Bradykinesia: Bradykinesia, one of the most common symptoms, refers to the slowness of movement, the difficulty in initiating movement and the decrease in automatic movement that is seen in people with Parkinson's. It takes them longer to react and move than people without the disease.
Rigidity: Rigidity in the person with Parkinson's is caused by an increase in muscle tone caused by overactivity of certain cells in the spinal cord. The PD patient walks with short, increasingly rapid shuffling steps. The arms, instead of swinging, remain pressed to the person's sides. There are problems with balance.
Facial Expressions: The facial expressions of people with Parkinson's are adversely affected by the disease, resulting in a 'mask-like' face that may cause others to believe the person is inattentive or unemotional.
Voice Pitch: The voice of the individual may become flat and atonal and may rise in pitch.
Swallowing: The person with PD will have difficulty in swallowing saliva, and that may lead to drooling. This is not caused by excessive production of saliva, but simply the inability to swallow the saliva normally produced.
Depression: Depression is common in people with Parkinson's. That's to be expected in people experiencing such a disabling illness, but studies have shown that patients with PD experience depression more than patients with other similarly disabling illnesses. In some patients the depression can be more disabling than the disease. In a few patients, the depression may become so severe that psychiatric treatment for it may become more important than the treatment of the illness. Improvement in the patient's outlook often leads to an improvement in Parkinsonian symptoms.
Parkinson's is currently considered incurable, but symptoms can be relieved or controlled. There are a variety of different types of treatments for Parkinson's Disease, ranging from medication, to surgery. The following is a list of known treatments presently available.
L-Dopa: L-Dopa, which is obtained from broad beans or produced synthetically, has been prescribed for the treatment of Parkinson's disease for more than 20 years. A major difficulty with L-Dopa treatment is that its effectiveness is limited and varies from person to person. As well, its effectiveness lessens over time, so greater doses must be given, and that eventually produces unwelcome side effects. Two recent advances in the treatment of Parkinson's include the development of
continuous-release preparations of L-Dopa, and the use of an inhibitor to slow the breakdown of L-Dopa in the body before it reaches the brain so more of it gets there. (L-Dopa, incidentally, may turn urine black or brown.)
Activa: A device called the Activa has had success. Doctors drill through the skull and implant an electrode into the thalamus, the message relay center in the brain. A wire is run just under the scalp down to the collarbone area, where a small "pulse generator" is implanted. It sends electrical waves, customized for each patient, to the electrode. By emitting regular, small electrical impulses the Activa blocks the tremors.
Pallidotomy: A procedure called a pallidotomy - which was fairly common in the treatment of Parkinson's until the advent of L-Dopa - has returned, thanks to a Swedish doctor named Laitenen who began performing the operation in 1992. In pallidotomy a tiny hole is drilled into the skull and then, using the data taken from the computer, a microelectrode is directed to a part of the brain called the globus pallidus. (Overactive cells there are responsible for the patient's tremors.) Once the globus pallidus is reached, a special electric current generator is used to burn a few small lesions in it, destroying the overactive cells. Local anesthetic is used, so the patient is awake during the procedure. There is no pain or discomfort.
Laitenen worked initially on 38 patients with 'medically refractory' (unresponsive to treatment) Parkinson's, and had remarkable success. Some patients described the results as 'miraculous'. They were able to walk again, and much or all of their tremors disappeared. Results were not so dramatic in a few of the patients, but virtually all reported improvement. Other surgeons have since followed Laitenen's lead.
Thalamatomy: A surgical procedure called thalamatomy has also generated renewed interest, and is effective for certain PD patients in whom tremor is the predominant complaint. A small region of the thalamus is destroyed.
Physical Therapy: As for day-to-day care, physical therapy is, of course, recommended and so are generous helpings of encouragement, reassurance and
treatment of associated conditions.
Occupational and Speech Therapy: Health professionals may recommend occupational and speech therapy for PD patients, as they have both proven helpful as the condition progresses.
Fetal Tissue Transplantation: Research into the transplantation of fetal tissue - which appears to re-supply the brain with dopamine-producing cells - is promising.
Deep Brain Stimulation: A recent and very promising technique to control the tremors associated with Parkinson's is described as 'deep brain stimulation'. This involves placing a permanent electrode in the region of the brain that produces the tremors. The electrode implanted deep in the brain is connected to a power source placed under the skin on the patient's chest, and the power can be adjusted as symptoms dictate. Said one 61-year-old woman on whom the procedure was performed, "I was unable to feed myself, unable to walk - to do anything, basically. I'm at least 80 per cent better. Friends can't stop asking me - 'What did they do to you?' It's fantastic."
Talk to your health professional about this technique.
"Constant reassurance that my loved ones are supportive, patient, caring, understanding, and loving is, I believe, my greatest asset and most secure source of happiness."
Dwight C. McGoon, M.D., a Mayo Clinic surgeon with Parkinson's Disease
High-fashion thermos coffee mugs, electric toothbrushes, hand-held showerheads and, yes, satin sheets - these are just a few of the items that make life easier for a person with Parkinson's Disease. Read on to learn more about providing care for a Parkinsonian.
Take Charge of Parkinson's
- Take an active rather than passive role. Learn all about Parkinson's Disease - its causes, symptoms and treatments. Find the most knowledgeable and experienced physicians and health professionals in your community. Physicians, Nurses, Neuropsychiatrists, Occupational Therapists, Physiotherapists, Dietitians, Speech-Language Therapists and Social Workers are just a few of the people who can help you with the many aspects of providing care for someone with Parkinson's.
- A cure hasn't yet been found, but that doesn't mean there are no effective treatments for the symptoms of Parkinson's. If one approach to treatment doesn't work, insist that others be considered. Take charge.
- Learn the course Parkinson's may take in the future and be prepared for changes in the level of care you will have to provide.
- Parkinson's is life altering, not life threatening. This means life with PD will change. All the same pleasures are out there to be enjoyed, they just need a bit of modification. If your care recipient enjoyed running, some of the same enjoyment of the outdoors comes with walking. Look for versions of the same kinds of activities to keep your care recipient active, independent and interested in life.
Stress and Anxiety
The symptoms of tremor, rigidity and bradykinesia (abnormal slowness of movement) are made worse by anxiety, stress and pressure. Be a calming influence. Don't pressure your care recipient to speed up. The anxiety you create will make movement slower.
Up to 50% of Parkinsonians suffer from depression. Watch for signs of depression and get treatment for your care recipient right away. Depression can affect short-term memory and concentration that will aggravate Parkinson's Disease. There is a risk of suicide. The signs of depression include:
Depression and Parkinson's Disease share the symptoms of fatigue and anxiety. The trick is to sense an unexplained increase in these symptoms that may be caused by depression.
Parkinson's and its medications combine to make constipation a problem. Take preventive action to avoid a crisis that will need medical attention.
Persons with Parkinson's have to pace their activities and take lots of rest breaks. It isn't lazy; it's smart. When your care recipient is having a really good day, feeling well and full of energy, there will be a tendency to do too much. Gently remind him or her that overdoing it will mean exhaustion and inactivity for the next couple of days. Better to ration that newfound energy.
Irritability and Frustration
Everyday tasks take longer with Parkinson's. They may take even longer on bad days. Allow time for this. Don't rush. Respond with tact and humor, not irritability and frustration. Place yourself in the mind and body of your care recipient and imagine how irritated and frustrated he or she must feel. If it's a bad day, set some activities aside for another day and do just what is possible and necessary. If you don't make these allowances, you create a stressful situation that aggravates the Parkinson's symptoms and may actually slow your care recipient even further. There's always tomorrow.
They are wonderful companions but be careful that they aren't surprise obstacles that cause tripping or falling.
Be sure your care recipient's physician tells you about all the expected side effects of medications so you know what to expect. It doesn't hurt to ask your pharmacist for more information. Be able to recognize when side effects are becoming too severe or unpleasant and contact the physician.
A well-designed exercise program can increase the benefits of Parkinson's medication, fight depression and promote an overall sense of well being. Your care recipient will benefit from three types of exercise:
- Stretching and range-of-motion exercises to maintain joint and soft tissue flexibility
- Strengthening exercises to improve and maintain strength of abdominal and back muscles
- Aerobic exercises to aid cardio-respiratory fitness.
- Prevent fatigue by pacing short exercise sessions throughout the day. Join in with your care recipient. It's good for you too.
- Don't stick to a rigid schedule. Instead, help your care recipient exercise when medications are working well and movement is easier.
- Urge your care recipient to be patient. The gains of regular exercise are not immediately obvious but they will come with time.
- Exercise should be fun. Look for organized programs at local community or commercial centers. If there is a Parkinson's support group in your community, they may offer programs specially designed for your care recipient. It may be possible to combine exercise with some social activities that are so important in fighting depression and maintaining a sense of independence.
It's great exercise for you and your care recipient. Here are some tips that make it easier and safer for someone with Parkinson's.
Make it Easier in the Kitchen
Here are some hints to encourage your care recipient to help out in the kitchen.
Safety in the Bathroom
The greatest danger is falling. The bathroom floor, bathtub and shower are slick and slippery when wet. There isn't anything in the house more punishing in a fall than the unyielding sides of the bathtub.
Comfort in the Bedroom
Getting in and out of bed and turning in bed can be a real problem for your care recipient. These tips will make it easier.
An occupational therapist will have further suggestions that apply to your specific situation.
As Parkinson's progresses, gait (the kind of step used in walking) and balance problems are more pronounced. Hard as you try to prevent it, a fall may happen. Keep these points in mind, just in case:
Parkinson's Disease Resources
- Parkinson's Disease Resource Center from ElderCare Online
- Parkinson's Disease from the National Institutes of Health PubMed
- The National Parkinson's Foundation (US)
- The Parkinson's Disease Foundation (US, Research)
- The Michael J. Fox Foundation for Parkinson's Research