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Zhang Hui
Neurology
About me
Weifang People's Hospital, Department of Neurology, attending physician, has been engaged in clinical work in the field of neurology for many years, with rich clinical experience in common and prevalent neurological diseases.
Proficient in diseases
Cerebrovascular disease, Parkinson's disease, myelitis, etc.
Voices
What can be done about senile dementia?
Once a patient is diagnosed with dementia, it is crucial to promptly visit a hospital for treatment. The doctor will conduct some auxiliary examinations based on the patient's medical history to rule out other diseases. If the diagnosis confirms dementia, firstly, family members must pay attention to care. The living abilities of patients with dementia decline significantly, and they may experience wandering, thus enhancing caregiving to prevent any accidents in the elderly; Secondly, it is essential to encourage the patient to engage in physical activities. Exercise can slow down the progression of aging and delay the further deterioration of dementia; Thirdly, it is vital to enhance communication for the patient, encouraging them to converse more with others, as interaction can slow down the progression of dementia; Fourthly, some specific medications should be administered for treatment. These drugs mainly include acetylcholinesterase inhibitors and NMDA receptor antagonists, which current research confirms can alleviate certain symptoms of dementia.
Viral encephalitis and bacterial encephalitis differences
There are significant differences between viral encephalitis and bacterial encephalitis in clinical settings. Firstly, their clinical symptoms differ; the fever in viral encephalitis is generally lower than that in bacterial encephalitis, where there may be widespread chills and persistent high fever. From another perspective, laboratory tests also help differentiate the two. In viral encephalitis, a routine blood test shows no increase in white blood cells, mainly an increase in the proportion of lymphocytes. In contrast, bacterial encephalitis is characterized by a significant increase in white blood cells, which aids in distinguishing the two. Furthermore, an essential diagnostic tool is the lumbar puncture, through which cerebrospinal fluid can be tested. In viral encephalitis, the white blood cell count in the cerebrospinal fluid is slightly increased; in bacterial encephalitis, it is significantly increased. The cerebrospinal fluid in viral encephalitis has a slight increase in protein content with no significant change in chloride levels; however, in bacterial encephalitis, the protein content in the cerebrospinal fluid is notably higher, and there is a significant decrease in chloride levels.
Does myasthenia gravis cause sensitivity to cold?
Patients with myasthenia gravis tend to be sensitive to cold, mainly due to the following factors: Firstly, patients with myasthenia gravis generally experience overall weakness and have very limited physical activity, making their physique rather frail. Patients with a weak physique are definitely more susceptible to colder environments. Secondly, patients with myasthenia gravis have lower resistance to diseases and often take immunosuppressants for a long time, making them highly susceptible to respiratory and lung infections. In cold conditions, some viruses can exploit this weakness, leading to exacerbated lung and respiratory infections, which is another major reason why patients with myasthenia gravis are sensitive to cold. Thirdly, myasthenia gravis is an autoimmune disease that leads to immune dysfunction. This immune dysfunction makes patients particularly sensitive to cold stimuli. In a cold environment, their immune function may become even more disordered, contributing further to their sensitivity to cold.
Late-stage symptoms of dementia
In the later stages of dementia, symptoms become very severe. Patients experience significant impairment in memory function, forgetting not only recent events but also events from the past. Additionally, patients show obvious impairments in visuospatial abilities, having trouble locating the bathroom in their own home, and often getting lost when they go out. There is also a noticeable change in behavior, with patients exhibiting aggression, cursing, and inappropriate actions like urinating or defecating in random places. Some patients may experience recurrent visual and auditory hallucinations. As the disease progresses, elderly patients may eventually become bedridden for life, not interacting with anyone, remaining silent, and refusing to eat. They ultimately may die from complications such as lung infections, urinary tract infections, malnutrition, and bedsores. Therefore, the symptoms of dementia in its later stages are quite severe, with cognitive impairments, abnormal mental and behavioral symptoms, and various infections all posing serious threats to the health of the elderly.
How to rule out meningitis.
Patients with meningitis usually show clinical symptoms such as fever, headache, nausea, and vomiting. To rule out meningitis, the following points should be considered. The first point is to check if the patient has a relevant medical history. If the patient's symptoms are very normal, without fever or headache, the possibility of meningitis is generally not very high. The second point is to pay attention to the physical examination, to see if there is any sign of meningeal irritation. If there is no meningeal irritation, it also does not support the presence of meningitis. The third point involves performing a lumbar puncture to examine the cerebrospinal fluid, checking if the pressure of the cerebrospinal fluid is high, and whether the cellular and biochemical properties within the fluid are normal. If completely normal, the likelihood of meningitis is also very small. Additionally, if necessary, an enhanced MRI scan of the brain should be performed, as meningitis usually shows enhancement.
Symptoms of subarachnoid hemorrhage
Subarachnoid hemorrhage is a rather dangerous disease, generally caused by the rupture of an aneurysm, but it can also be due to cerebral arteriovenous malformations. The symptoms of the hemorrhage mainly manifest as severe headache, with many patients describing it as the worst headache of their life. Additionally, patients may experience significant nausea and vomiting, and signs of meningeal irritation such as neck stiffness. Patients with subarachnoid hemorrhage may also develop a fever, though typically not exceeding 38 degrees Celsius, and may experience cerebral vasospasms. If the spasms are severe, they could lead to secondary cerebral thrombosis. Moreover, if the bleeding is substantial, the patient may also suffer from consciousness disorders such as coma, as well as serious complications like electrolyte imbalances and hyponatremia.
Does amyotrophic lateral sclerosis cause numbness in the hands?
Amyotrophic lateral sclerosis (ALS) refers to a motor neuron disease. Patients with this disease generally do not experience numbness in the hands, mainly because it primarily affects the motor system and does not impact the sensory system. Thus, the vast majority of patients will not have sensory disturbances or experience clinical manifestations of numbness in the hands. The specific causes and mechanisms of this disease are still not very clear, but they may be related to genetic factors, the toxic effects of excitatory amino acids, oxidative stress, and mitochondrial dysfunction. Symptoms in patients gradually worsen, and respiratory function impairment may also occur. However, so far, there is no effective cure.
Foods to avoid with optic neuritis
Optic neuritis usually causes a decline in the patient's vision, with noticeable decrease in either unilateral or bilateral vision. Commonly seen in clinical practice are simple optic neuritis, as well as optic neuritis caused by multiple sclerosis, and optic nerve pathology caused by neuromyelitis optica. Essentially, optic neuritis is an autoimmune disease, primarily caused by the demyelination of the optic nerve. In terms of diet, there are certain foods to avoid. First, spicy and stimulating foods. These types of food can disrupt the body's immune function, causing vascular nerve congestion, which is detrimental to the recovery of optic neuritis. Second, overly greasy foods. Foods that are too greasy can also affect the blood supply to the nerves, prolonging the recovery time of optic neuritis.
How to check for encephalitis?
To check for encephalitis, the main aspects of examination include the following. First, a complete blood count is necessary, which helps to determine if there is an increase in white blood cells and to assess the proportion of various types of white blood cells; this is a basic test. The second examination is an electroencephalogram (EEG), if the EEG shows abnormalities, it may suggest a diagnosis of encephalitis. The third examination involves cranial magnetic resonance imaging (MRI). If the encephalitis is severe, the MRI can reveal lesions, which also suggests a diagnosis of encephalitis. The fourth examination is invasive, involving a lumbar puncture. This test allows for the analysis of cerebrospinal fluid, assessing whether there is an increase in white blood cells and proteins in the fluid, which plays an important role in the diagnosis of encephalitis. In summary, diagnosing encephalitis necessitates a complete blood count, cranial MRI, analysis of cerebrospinal fluid, and a comprehensive EEG examination.