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Mirror sign

Introduction
Cause
Examine
Diagnosis

Introduction

Introduction It is difficult to examine the loss and loss of recognition of senile dementia patients, and it is difficult to distinguish their misuse and loss of recognition from incompetence caused by aphasia, visual space skills disorder and forgetfulness. About one-third of patients have a blindness. Face recognition is not possible, do not know the face of loved ones and familiar friends. Impaired self-cognition can produce mirror signs. Patients sit in front of the mirror and talk to their own images in the mirror, and even ask their own images "Who are you?"

Cause

Cause

The cause of Alzheimer's disease is not yet clear, but there are many reasons that cause dementia in the elderly.

1. Brain degenerative diseases: There are many kinds of dementia caused by brain degenerative diseases. The most common one is Alzheimer's disease dementia. In the early stage of senile, it is called Alzheimer's disease. Its onset is slow and progressive progressive dementia. In addition, there are Pico disease, Tinton's chorea dementia, progressive supranuclear palsy, Parkinson's disease dementia and so on. These dementias in the back are relatively rare.

2. Cerebrovascular disease: The most common form of multiple cerebral infarction dementia is caused by a series of multiple mild ischemic attacks, which are caused by multiple brain accumulations. In addition, there are subcortical vascular dementia and acute cerebral vascular dementia, which can rapidly develop into dementia after a series of cerebral hemorrhage and cerebral embolism, and a small number can also be caused by a large area of cerebral infarction. In short, cerebrovascular disease is also a common cause of senile dementia.

3. Genetic factors: Many studies at home and abroad have shown that offspring of patients with Alzheimer's disease have more chances to develop the disease. However, its genetic pattern is still unclear. Some people think that it is dominant gene inheritance; some people think it is recessive gene inheritance; others think it is multi-gene autosomal recessive inheritance, and the genetic effect can be restricted by environmental factors and mutations of genetic factors, so that its genetic effect is interrupted. There are also some studies that suggest that elderly people are non-hereditary diseases, such as vascular dementia is not directly related to heredity.

4. Endocrine disorders: such as hypothyroidism and hypothyroidism can cause dementia.

Examine

an examination

Related inspection

Brain CT examination brain MRI examination EEG examination brain nerve examination

1. The standard for dementia diagnosis (DSM class one R)

(1) There is evidence of recent and long-term memory impairment.

(2) Have at least one of the following:

1 abstract thinking obstacles.

2 judgmental obstacles.

3 other advanced cortical damage, such as aphasia, misuse, loss of recognition, etc.

4 personality changes.

(3) The first 12 obstacles affect work, daily social activities and interpersonal relationships.

(4) It does not only happen in a state of paralysis.

(5) Any of the following:

1 specific organic factors related.

2 cannot be explained by any non-organic mental illness.

2. Detailed medical history comparison with previous intelligence and behavior.

Diagnosis

Differential diagnosis

1. Mild cognitive impairment: only memory impairment, no other cognitive impairment; some patients may be early manifestations of AD.

2. Depression: Early AD can be similar to depression, such as depression, lack of interest in various things, memory impairment, insomnia, fatigue or weakness.