Tag: Brain & Nervous System

  • Why Memories Change

    MEDICAL NEWS

    Image of older man looking out a window thinking.

    Memory is like the old telephone game, according to researchers at Northwestern University School of Medicine. You remember when kids took turns whispering a message into the ear of the next person in line? By the time the last person spoke it out loud, the message had radically changed. It’s been altered with each retelling.

    Every time you remember an event from the past, your brain networks change in ways that can alter the later recall of the event. Thus, the next time you remember it, you might recall not the original event but what you remembered the previous time. The Northwestern study is the first to show this.

    “A memory is not simply an image produced by time traveling back to the original event-it can be an image that is somewhat distorted because of the prior times you remembered it,” said Donna Bridge, lead author of the study published in the Journal of Neuroscience. “Your memory of an event can grow less precise even to the point of being totally false with each retrieval.”

    The reason for the distortion, Bridge said, is the fact that human memories are always adapting. Take note, lawyers and eyewitnesses.

    © American Institute for Preventive Medicine

  • A Beautiful Brain

    Brain & Nervous System

    A pink paper brain with 2 dumb bells next to it.

    Like a great conductor, our brain directs our every movement, sound, and emotion. It never stops working and thinking for us, but we rarely return the favor and think about the health of our brain. A healthy brain can concentrate, analyze, plan, learn, remember, feel, and so much more.

    While a healthy lifestyle supports a healthy brain, a happy brain also stays engaged. Feed your brain by playing games, learning new things, and staying connected with friends and family.

    Health at Home Lifetime book by the American Institute for Preventive Medicine. www.HealthyLife.com. All rights reserved.

    © American Institute for Preventive Medicine

  • How Aging Affects Memory

    Brain & Nervous System

    Image of 2 elderly male friends hugging.

    Many people are afraid that growing old means losing the ability to think, reason, or remember.

    Some short-term memory loss does come with aging. You may, for example, forget where you put your keys or not remember the name of a person you just met. This is normal. Memory lapses that interfere with your normal activities, though, are not a normal part of aging. Nor is confusion.

    People who have changes in personality, behavior, or skills may have a brain or nervous system condition. These problems could also be a side effect of certain medicines, too much alcohol, or depression. This chapter gives information on common brain and nervous conditions in older persons.

    Health at Home Lifetime book by the American Institute for Preventive Medicine. www.HealthyLife.com. All rights reserved.

    © American Institute for Preventive Medicine

  • Dementias

    Brain & Nervous System

    Dementias are brain diseases. They result in a decline of all areas of mental ability. This includes learning, memory, problem solving, behaviors, and language.

    Signs & Symptoms

    Symptoms of most forms of dementia usually appear slowly over time. However, with a certain form, multi- infarct dementia, the onset of symptoms can be sudden. Symptoms of dementia include:

    *  Poor memory of recent events, etc.

    *  Making up stories to explain memory loss

    *  Getting lost in familiar settings

    *  Not being able to finish tasks

    *  Decreased energy

    *  Social withdrawal or depression

    *  General confusion

    *  Behaviors that are paranoid, anxious, irritating, childlike, or rigid

    *  No interest in personal hygiene, grooming, or dressing oneself

    *  Unclear speech

    Causes & Care

    Primary or True Dementias

    The origin of the dementia is in the brain itself. Examples of this type are:

    *  Alzheimer’s disease. This is the most common type of dementia.

    *  Multi-infarct dementia. This is due to blocked blood vessels in the brain. Often the cause is a stroke.

    *  Parkinson’s disease

    *  Pick’s disease. This is like Alzheimer’s disease, but has different changes in the brain.

    *  Huntington’s disease. This is an inherited disease. Dementia symptoms usually start in middle age. Facial tics and other uncontrolled movements also occur.

    *  Creutzfeldt-Jacob disease. This is caused by a virus that lies dormant in the body for years. When the virus is activated, the dementia progresses quickly.

    *  Multiple sclerosis. With this, scar tissue in the brain can prevent the normal travel of nerve impulses used for mental function. Dementia with multiple sclerosis is rare, though, and may occur with the end stage of this disease.

    Secondary Dementias

    *  Depression

    *  Alcohol problems

    *  Reactions to certain medicines

    *  Poor nutrition. Lack of vitamin B12.

    *  Hypothyroidism

    *  Dehydration

    *  Head injuries

    *  Infections, such as HIV which causes AIDS or syphilis

    *  Brain tumors

    {Note: A recent study found that older Veterans with posttraumatic stress disorder (PTSD) are nearly two times as likely to have dementia than their peers who do not have PTSD.}

    Dementias need medical diagnosis and treatment. When another condition, such as depression, is the cause and is treated with success, the dementia can be cured. For others, such as Alzheimer’s disease, there is no cure. The goal of treatment is to treat symptoms and provide safety and comfort.

    Self-Care

    The person with dementia needs to:

    *  Follow a simple daily routine

    *  Limit activities

    *  Wear an ID tag

    *  Be kept in a safe environment

    *  Have labels put on objects

    *  Eat a well balanced diet and drink plenty of fluids

    *  Have regular sensory stimulation, like touching, exercising, etc.

    Caretakers should:

    *  Assume a non-combative approach to difficult behaviors. Steer the person into another activity.

    *  Give medicines as advised by the person’s doctor and report and review medicines with the doctor and/or pharmacist.

    *  Get home care, respite care, hospital, or nursing home care, if needed.

    When to Seek Medical Care

    Contact Doctor When:

    *  You are unable to care for someone with dementia or he or she is too agitated or hostile to control.

    *  A medical evaluation is needed for a person with symptoms of dementia.

    Get Immediate Care When:

    Any of the “Stroke Warning Signs” are present.

    Delirium

    Delirium is mental confusion, behavior changes, etc. that develop in a matter of hours to a day or so. Delirium is a symptom of another condition, such as:

    *  A high fever

    *  Pneumonia or other infection

    *  Diabetes

    *  Substance abuse or withdrawal

    *  Misuse or withdrawal of certain medicines

    Immediate medical care is needed for delirium so the cause can be found and treated.

    Health at Home Lifetime book by the American Institute for Preventive Medicine. www.HealthyLife.com. All rights reserved.

    © American Institute for Preventive Medicine

  • Dizziness & Vertigo

    Brain & Nervous System

    Dizziness is feeling lightheaded. It is a symptom of another condition. Vertigo is a spinning feeling. It affects the inner ear, the brain’s gravity-and-motion detector.

    Dizziness Conditions

    Heat Stroke

    Signs & Symptoms

    Sudden dizziness with:

    *  Hot, dry, red skin

    *  High fever. No sweating.

    *  Pulse that is rapid and then gets weak

    *  Exposure to very, very hot conditions

    What to Do

    Get immediate care.

    Stroke or Transient Ischemic Attack

    Illustration on how a stroke is caused.

    Signs & Symptoms

    Dizziness with “Stroke Warning Signs

    What to Do

    Follow “Immediate Care” guideline.

    Heart Attack

    Illustration of how a heart attack is caused.

    Signs & Symptoms

    Dizziness with “Heart Attack Warning Signs

    What to Do

    Follow “Immediate Care” guidelines

    Irregular Heartbeat

    Signs & Symptoms

    Dizziness with a heart rate greater than 130 beats per minute or less than 50 beats per minute or an irregular heart rhythm

    What to Do

    Get immediate care.

    Dehydration

    Signs & Symptoms

    Dizziness with “Signs & Symptoms” of dehydration

    What to Do

    Get immediate care.

    Intestinal Obstruction

    Signs & Symptoms

    Dizziness with:

    *  Abdominal pain and swelling that worsen

    *  Inability to pass stool or gas

    *  Vomiting

    What to Do

    Get immediate care.

    Dissecting Aortic Aneurysm

    Illstration of a descending thoracic aneurysm.

    This is a tear in the main artery from the heart.

    Signs & Symptoms

    Dizziness and fainting. Severe chest pain with extreme pain felt across the upper back (not just on one side) that came on within 15 minutes for no apparent reason, such as an injury or back strain. The pain can spread to the abdomen.

    What to Do

    Get immediate care. (Do not take aspirin.)

    Ear Infection

    Signs & Symptoms

    Dizziness with ear pain, ringing in the ear, pus or other ear discharge, fever

    What to Do

    Contact doctor.

    Illustration of swimmer's ear.

    Labyrnthitis

    This is an inflammation in the ear that usually results from an upper respiratory infection.

    Signs & Symptoms

    Dizziness with:

    *  True spinning sensation

    *  Loss of balance

    *  Nausea and vomiting

    *  Ringing in the ears

    *  Jerky movements of the eye

    What to Do

    Contact doctor.

    Low Blood Sugar

    This can occur in persons taking insulin or oral pills for diabetes and/or after not eating for 4 or more hours.

    Signs & Symptoms

    Dizziness with hunger, sweating, trembling, anxiety, and confusion

    What to Do

    Use self-care.

    Temporary Drop in Blood Pressure (Orthostatic Hypotension)

    This could be a side effect of taking medicines, such as ones for high blood pressure and depression.

    Signs & Symptoms

    Dizziness when getting up too quickly from a seated or lying position

    What to Do

    Use self-care.

    Other Causes of Dizziness:

    *  Alcohol

    *  New medications, antibiotics, or high doses of aspirin

    *  A change in altitude or motion sickness

    *  Sudden movement, such as with turning the head quickly

    *  Seeing fast moving objects Treatment for dizziness depends on the cause.

    Vertigo

    Signs & Symptoms

    *  Wooziness

    *  Sense that the room is spinning

    *  Nausea

    *  Blurred vision

    *  Floating, rocking, and/or rolling feeling

    *  Sense of walking on an uneven surface

    *  Loss of balance

    Causes, Risk Factors & Care

    Vertigo is caused by a problem with the inner ear. Causes of vertigo are:

    *  Benign Positional Vertigo (BPV). This is the most common type. It may happen when you turn over in bed, get up, sit down, bend over, or just tilt your head. The sensations start within seconds of changing positions and last less than a minute. As bothersome as BPV is, it rarely signals more serious disease. Risk factors for BPV are aging, viral infections, and a prior head injury.

    *  Ménière’s disease. This condition may be due to spasms of blood vessels in the inner ear, fluid retention in the inner ear, or allergic reactions. Ménière’s disease is linked with a decrease in hearing and tinnitus. It sometimes leads to permanent hearing loss.

    *  Multiple sclerosis. With this, the covering that protects nerves (myelin) is destroyed. Over time, scar tissue (sclerosis) forms where the myelin used to be in the brain and spinal cord. Scar tissue or inflammation in the brain may cause vertigo symptoms.

    After proper diagnosis, most cases of vertigo are easily treated in the doctor’s office or at home with self-care.

    While attacks of Ménière’s disease can continue for many years, some symptoms can be controlled with medication.

    Self-Care

    For Orthostatic Hypotension:

    *  Don’t jump out of bed. Go from a lying position to a sitting position slowly. Sit on the edge of the bed a few minutes. Stand up slowly.

    *  From a sitting position, stand up slowly. Hold onto the arms of the chair or the head of the bed for support.

    *  If you feel lightheaded, sit back down for a few minutes. Take a few deep breaths. Get up again, slowly.

    For Benign Positional Vertigo (BPV):

    *  Sit on the side of the bed and lean to your right, resting the right ear on the bed. This might make you dizzy and nauseous at first.

    *  Wait 20 seconds until the dizziness stops and sit up straight.

    *  Wait another 20 seconds and repeat steps 1 and 2 on your left side.

    *  Do this exercise 10 to 15 times, 3 times a day.

    For Ménière’s Disease:

    *  Lie still in bed until the dizziness and nausea are gone.

    *  Walk with assistance.

    *  Don’t change positions too fast.

    *  Do not drive, climb ladders, or work around dangerous machinery.

    *  Decrease the amount of salt and fluids in your diet.

    *  Avoid bright lights. Do not read when you have a spinning feeling.

    *  Resume your normal activities when symptoms go away.

    *  Avoid alcohol, caffeine, and tobacco.

    Health at Home Lifetime book by the American Institute for Preventive Medicine. www.HealthyLife.com. All rights reserved.

    © American Institute for Preventive Medicine

  • Learn For Brain Health

    Brain & Nervous System

    Illustration of person standing with arms open holding large puzzle piece with brain.

    As adults grow older, it’s important for brain health to have new learning challenges, and to improve problem-solving and reasoning skills.

    Endless possibilities: Choose a subject or a skill you are curious about or wished you explored when you were younger. Want to learn a musical instrument? Become more computer-savvy? Improve car maintenance skills?

    Local learning: Take a course at a library, community college, or recreation center.

    Online and free: Check out the wide variety of free, online courses atedx.orgorcoursera.org.

    Health at Home Lifetime book by the American Institute for Preventive Medicine. www.HealthyLife.com. All rights reserved.

    © American Institute for Preventive Medicine

  • Stroke (Brain Attack)

    First Aid

    A stroke is also called a “brain attack.” With a stroke, brain cells die due to a blood clot or rupture of a blood vessel in the brain. The end result is brain damage (and possible death).

    In the U.S., strokes are the 3rd leading cause of death. They are the leading cause of adult disability.

    Signs & Symptoms

    *  Sudden numbness or weakness of the face, arm, or leg, especially on one side of the body.

    *  Sudden confusion, trouble speaking or understanding.

    *  Sudden trouble seeing in one or both eyes.

    *  Sudden trouble walking, dizziness, loss of balance or coordination.

    *  Sudden severe headache with no known cause.

    Causes

    Most strokes are caused by a blood clot in an artery in the neck or brain. Some are caused by bleeding into or around the brain.

    Risk Factors for a Stroke

    *  Previous stroke or transient ischemic attack (TIA)-a temporary lack of blood supply to the brain.

    *  Atrial fibrillation. This is an irregular beating of the heart.

    *  High blood pressure. Cigarette smoking. Diabetes. Coronary artery disease.

    *  Being a male over age 70.

    Illustration of how a stroke is caused.

    Prevention

    *  Take medicine(s), as prescribed, to control blood pressure, blood cholesterol, diabetes, and atrial fibrillation. Aspirin may help reduce the risk of stroke in women ages 55-79 years. Discuss this with your doctor.

    *  Get to and stay at a healthy weight. Get regular exercise.

    *  Don’t smoke. If you smoke, quit. Use alcohol in moderation. Manage stress.

    Questions to Ask

    Self-Care / Prevention

    First Aid before Emergency Care

    *  Note the time when the first sign(s) of stroke occurred. Report this time to emergency personnel. For the most common type of strokes, a clot-busting drug should to be given within 3 hours of the start of symptoms.

    *  Do not give the person anything to eat or drink. Do not give aspirin.

    Healthier at Home book by the American Institute for Preventive Medicine. www.HealthyLife.com. All rights reserved.

    © American Institute for Preventive Medicine

  • A Bucket Of Ice

    MEDICAL NEWS

    Image of a bucket filled with ice.

    Have you taken the ice bucket challenge? What do you know about the disease you were raising funds for?

    Amyotrophic lateral sclerosis (ALS), sometimes called Lou Gehrig’s disease, is a rapidly progressive, fatal neurological disease that attacks the nerve cells responsible for controlling voluntary muscles.

    According to the National Institute of Neurological Disorders and Stroke, ALS attacks nerve cells that control muscles in the arms, legs, and face. Eventually use of limbs and speech stop. Voluntary movement is lost. And with that comes loss of the ability to breathe.

    There is no test to diagnose it. There is no cure. And no one knows who will get it and who does not. Ongoing research is looking for answers.

    Lou Gehrig was a baseball legend, the first baseman for the New York Yankees who developed the disease that ended his incredible career and his life.

    © American Institute for Preventive Medicine

  • Avoid Summer Headaches

    SELF-CARE CORNER

    Image of women sitting at the beach talking on the phone.

    The sun can be especially bothersome if you suffer from migraine. Looking directly or indirectly at the sun can trigger a migraine attack for some people.

    Don’t forget your shades-sunglasses, visors, or sun hat when you are out and enjoying the sunshine at the beach, tennis court, golf course, or a baseball game, advises the National Headache Foundation.

    Other summer headache triggers include changes in barometric pressure. Watch out for those sudden thunderstorms and windy days.

    Drink plenty of water, not soft drinks, to help prevent those “dehydration” headaches. You don’t want to drink too many soft drinks containing caffeine, which can also contribute to your headaches.

    At backyard barbecues and picnics, you may encounter food items that you wouldn’t normally eat. The sauces and dry rubs on those tasty ribs may contain monosodium glutamate (MSG) to which many headache sufferers are sensitive. The spread at a picnic may include aged cheeses, hot dogs, and other meats with nitrates, and pickles-all possible triggers. Also watch your intake of beer and cocktails.

    © American Institute for Preventive Medicine

  • Busting Myths About Alzheimer’S

    MEDICAL NEWS

    Image of eldery man in wheelchair with daughter and granddaughter.

    More than 5 million Americans are living with Alzheimer’s and many myths still exist about it.

    MYTH: Alzheimer’s and dementia mean the same thing.

    FACT:Dementia is a group of symptoms that can be caused by Alzheimer’s and other diseases. Up to 80 percent of dementia cases are caused by Alzheimer’s disease. But, dementia can be caused by other conditions, such as Parkinson’s disease.

    MYTH: Everyone gets forgetful with age, so Alzheimer’s is no big deal.

    FACT:Alzheimer’s is not a normal part of aging. Alzheimer’s gets worse over time. Eventually, someone with Alzheimer’s will be unable to have a conversation or do normal everyday tasks. The earlier Alzheimer’s is diagnosed, the sooner treatment can start. This may help delay the disease’s progression.

    MYTH: Alzheimer’s won’t hurt you physically. You can live with the memory loss and other symptoms.

    FACT:Alzheimer’s is the sixth leading cause of death in the United States. Some people may live up to 20 years after diagnosis, but there are no survivors.

    MYTH: Medicine can cure Alzheimer’s.

    FACT:Treatments can help slow down the disease, but there is no cure. Alzheimer’s will eventually progress, even with treatment. The treatments may help improve quality of life for those with Alzheimer’s and their caregivers. Research is underway to find ways to prevent the disease and hopefully cure it.

    Source: Alzheimer’s Association

    Look for early signs of Alzheimer’s

    Detecting Alzheimer’s early is important. Since everyone forgets things from time to time, it can be hard to know what’s normal forgetfulness and what’s something more serious. People in the early stages may still work, drive and do daily tasks. They may think they are fine, and deny they have any memory issues.

    Look for these signs as possible flags that could mean early Alzheimer’s and talk to a doctor if you notice them:

    *  Problems coming up with the right word for something

    *  Can’t remember names when introduced to new people

    *  Trouble performing tasks at work or home

    *  Forgetting something that was just read or told

    *  Losing a valuable or important item

    *  Having trouble planning or organizing

    Though these signs don’t mean a person has Alzheimer’s for sure, it’s best to see a doctor.

    © American Institute for Preventive Medicine