Dr. Shyam K Jaiswal

Alzheimer's Disease is a neurological problem that is characterised by a cognitive decline and memory loss. It is a type of neurodegenerative dementia. The symptoms of Alzheimer's Disease include not being able to absorb and retain new information, lack of reasoning and judging, not being able to take on complex tasks, impaired visuospatial abilities, problems in reading, writing and speech, among many others. If a person has at least two of these symptoms in a debilitating manner, then the diagnosis can be made in favour of Alzheimer's Disease. The main causes of Alzheimer's are shrinkage of the brain size and death of the brain cells. The immune system is also said to trigger this neurodegenerative disease.

Let us find out what medical science has found so far:

1. Connections: Many a times, in Alzheimer's disease, the memory and behaviour of the person changes because the brain is unable to make proper neural connections which can lead to memory loss of how a person behaved and the elements that formed the basis of the patient's cognition. Apparently, the immune system behaves in the same way within the brain and blocks the connection. This happens because there is constant communication between the brain and immune system along neurological lines, which is where the disease first emanates.
2. Inflammation: The brain is prone to inflammation or swelling that is not the normal kind. This inflammation happens as a result of the activation of the infection fighting neurotransmitters and the chemical changes that happen in the brain when an infection strikes. The inflammation usually happens in the plaques or clumps which the brain tries to protect. These clumps are made up of a protein called Amyloid. The immune system is responsible for creating this inflammation in the brain of the patient.
3. Pattern Recognition Receptors: Many of these receptors work in different manners and cooperate with each other to create a response in the brain. These PRRs can be found in the brain plaques, and they develop the signs of danger which further fuels the inflammation in the brain as a matter of protection.
4. Activation of Cells Linked with the Immune System: When the PRRs begin to respond, it basically activates the immune system and the cells of the same. This is the basic reaction that causes the changes in brain which then leads to the attachment of the protein to the tissue that is diseased, in which case Alzheimer's Disease starts. The inflammation that we had spoken about earlier basically happens in the nervous tissue.

It is important to recognise and act on the initial signs of Alzheimer's Disease before it progresses beyond one's control. If you wish to discuss about any specific problem, you can consult a Neurosurgeon.

A stroke, also called cerebrovascular accident (CVA), cerebrovascular insult(CVI), or brain attack, occurs when a part of the brain is deprived of blood flow. When the brain cells are deprived of oxygen they begin to die. When brain cells die, the functions controlled by that part of the brain also stops, which results in different types of disabilities among stroke survivors.

There are two types of strokes

• Hemorrhagic
• Ischemic stroke

The first is caused when a brain aneurysm or a weak blood vessel bursts. Most of the time, this type of stroke leads to death. The second one happens when a clot blocks the flow of blood to the brain. Patients suffering from stroke suffer from various side-effects, the most common ones being paralysis or loss of feeling in a certain part of the body, problem in understanding or talking and loss of vision in one side. The side-effects start showing up regularly after a person has had a stroke.

In certain conditions, blood flow to a certain part of the brain stops for only some time and hence the body suffers stroke like symptoms which only last a couple of hours before disappearing. This is known as a transient ischemic attack (TIA). Unfortunately, the effects of a stroke can be debilitating and also permanent. Hence its important to know the symptoms of a stroke and rush the patient to a doctor as soon as possible. Sometimes early treatment can save a lot of damage.

The primary symptoms of stroke are as follows:

1. Confusion and problems with talking and comprehension
2. Headache along with alteration of consciousness or vomiting
3. Numbness of the face, arms or legs, especially on one side of the body
4. Issue with seeing, in one or both eyes
5. Inability to walk with stability, including disrupted coordination
6. Problems with the bladder and bowel control
7. Acute depression
8. Body temperature fluctuates, and pain worsens with movement
9. Paralysis on one side of the body along with fatigue
10. Problem in expressing or controlling emotions

Risk Factors:

• Hypertension
• Diabetes
• Increased Cholesterol
• Smoking
• Obesity
• Sedentary Lifestyle

Diagnosis of stroke

Several tests are carried out to determine the type of stroke acquired. They are:

1. Physical examination, which involves observing the patient's overall condition.
2. Blood tests
3. CT scans
4. MRI scans
5. Cerebral angiogram
6. Echocardiograms

Stroke is a fatal brain disease and can cause permanent damage to your system so its best to check with your Neurologist to know how you can prevent it.