Questions tagged [neurology]

The branch of medicine or biology that deals with the anatomy, functions, and organic disorders of nerves and the nervous system.

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9 views

Why both hypokinetic and hyperkinetic changes are seen in Parkinsons?

In Parkinsons disorder the substanstia nigra pars compacta get affected and there is destruction of the dopaminergic neurons, which ultimately disturbs the direct and indirect pathways. Now we know ...
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35 views

what is the visual feedback in parkinson's disease?

the patient cannot walk normally, but can only walk if there are black and white squares on the floor. How can we explain this visual feedback physiologically? basically what is visual feedback? What ...
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What is the meaning of “subcortical retraction” in a description of MRI of a Kearns-Sayre syndrome patient?

I came across the term subcortical retraction and cannot understand its meaning. Does it mean "the withering of the subcortical areas" (shrinking of subcortical white matter)? From Follow-up ...
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15 views

Meningeal irritation in subarachnoid hemorrhage

Meningeal irritation, as indicated by features such as neck stiffness, is a common finding during subarachnoid hemorrhage. However, its pathophysiology is rather unclear to me. In particular, I do not ...
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A neurologist or a psychiatrist or a psychologist, who is better suited to diagnose neurodevelopmental disorders?

There are a lot of neurodevelopmental conditions which are hidden-type and resembles mental conditions. These includes sensory processing disorders, prosopagnosia, developmental coordination disorder (...
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Light adaption of pupil. When is a size adaption normal? [closed]

if an eye gets lighted with a fleshlight or other lightsources the pupils will decrease their width. This pupillary response is a typical indicator in diagnostics. Is there any specific value which ...
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1answer
151 views

Myasthenia Gravis and preserved deep tendon reflexes, why?

I saw a patient on rounds the other day w/ MG (Myasthenia Gravis) and it was mentioned that DTR (deep tendon reflexes) are preserved. I've been going over it in my head and I am confused why they ...
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Why is multiple sclerosis associated with trigeminal neuralgia?

Multiple sclerosis (MS) is classically described as: an immune-mediated inflammatory disease that attacks myelinated axons in the central nervous system (Luzzio, n.d.). Since MS only involves the ...
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1answer
51 views

Would neurons regenerate even in adults? [closed]

I want to know whether or not the nerves regenerate in human adults. My Question Please give me evidences for this issue. What experiments and logic do they use to prove that the nerves are/are not ...
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The Roles of SSRIs and Neurotransmitters in Migraines

How do SSRIs alleviate migraine pain? Can anyone shed any light into the mechanism please? More broadly, I am interested in the roles of neurotransmitters in the cause and potential prevention of ...
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Why does Delayed Post-hypoxic Leukoencephalopathy (DPHL) have a biphasic clinical course?

Delayed Post-hypoxic Leukoencephalopathy (DPHL or Grinker myelinopathy) is a rare condition where patients recovering from an anoxic/hypoxic brain injury develops new neurological symptoms 2-4 weeks ...
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Is the MSC-based regenerative medicine promising for Ischemic stroke stroke patients? ; two points difference in the 47-point test

Many papers says, regenerative medicine using MSCs are promising for Ischemic stroke stroke patients. But in my layman's sense, various data don't seem promising. So, I want to hear the opinions of ...
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Can thickened maxillary and ethmoidal sinuses cause headaches?

An 18 year old patient has had mild and constant daily headaches for two months. The headaches were most painful in the eyes and forehead area. His MRI was clean, apart from moderately thickened ...
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319 views

Does a unilateral total obstruction of the carotid artery cause brain damage?

The brain receives oxygenated blood from both the internal carotid arteries and the vertebral arteries, which are connected through the Willis circle (Circulus arteriosus cerebri). Obstruction of ...
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Does hydroxychloroquine make tardive dyskinesia worse?

I found this article which suggests to me that chloroquine (hydroxychloroquine?) can make tardive dyskinesia worse. Is my reading of it accurate?
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Can neuromuscular electrical stimulation be used as a low-cost alternative to mechanical breathing

It is speculated that because of COVID-19 pandemic there may be shortage of intensive care equipment (mechanical breathers) causing deaths. Though IDK what is so costly in these mechanical breathers ...
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31 views

Tilt table test and beta blockers

Is tilt table test indicative with beta blockers for dysautonomia diagnosis? Or is it require drug withdrawal?
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32 views

What, if any, are reasonable further tests for evaluation of cryptogenic stroke?

What is considered a "complete" workup of cryptogenic stroke? If someone presents with symptoms consistent with stroke and receives: PE EKG and external monitoring, MRI with contrast/MRA of head and ...
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1answer
16 views

Neuronal ceroid lipofuscinosis treatments [closed]

Could Batten’s disease be cured by supplementing a drug which promotes lipolysis, since it is caused by an accumulation of lipids in brain?
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39 views

How does high-intensity aerobic exercise affect the brain?

I have been reading articles claiming that serotonin, endorphins and BDNF are produced during exercise, but they never mention the intensity or duration of exercise for this to happen. To not make ...
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22 views

How does low-intensity aerobic exercise affect the brain?

I have been reading articles claiming that serotonin, endorphins and BDNF are produced during exercise, but they never mention the intensity or duration of exercise for this to happen. To not make ...
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39 views

Why does the brain shrink and increase energy usage after dehydration?

Along with mood and energy deficits a dehydrated brain has to use a lot more energy to accomplish the same tasks, shows a study from King's College London. Quote from Dehydration affects brain ...
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Are transorbital lobotomies still considered ethical these days?

Psychosurgery has a controversial history and despite modifications still raises serious questions about benefit, risks, and the adequacy with which consent is obtained. Its continued use is defended ...
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28 views

Peripheral excitability effects of Mirtazapin

Is there any reason/mechanism according to which only two dosages (on two consecutive days) of Mirtazapin 30mg might lead a patient to feel an increase in their peripheral neurological sensitivity, ...
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What’s the role of hypothalamus in headache pathophysiology? [closed]

The hypothalamus forms part of the central autonomic network, regulating body homeostasis and controlling pain. What is its role in headaches?
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1answer
86 views

Tips on identifying CVA patients

In my work, not once i encounter old people with deterioration and i am having hard time deciding if does symptoms may be related to CVA or not and if a neurologist should be called. I will explain ...
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1answer
325 views

What things can trigger scintillating scotomas? Are they sometimes classified benign and not a reflection of a condition requiring further treatment?

This is a different question than Are scintillating scotomas really caused by cortical spreading depression? If so, how is this known to be true? asked almost one year ago in Psychology and Neurology ...
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1answer
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Has tardive dyskinesia ever “gotten better?” [closed]

I have tardive dyskinesia and my doctor said when he diagnosed me that it "might" not go away. I've heard that it's "potentially permanent." Has there ever been a recorded case where the condition has ...
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114 views

Foods/drugs/vitamins to avoid, or not avoid, for tardive dyskinesia

I'm half expecting this to be closed as off-topic as seeking personal medical advice, but I'm going to try not to phrase it that way and see how it flies. For full disclosure, I was recently diagnosed ...
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20 views

Why do some neurons live longer than others?

It seems that the scientific community agrees that the development of new neurons stops between adolescence and early adulthood. ("Does the Adult Brain Really Grow New Neurons?" https://www....
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35 views

Can the human brain be taught to recognize new body parts, and how?

A newly emerging category of medical study is the potential to replace a missing piece, in part or in its entirety. While currently in its infancy, the potential for this in human health is astounding....
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1answer
380 views

What is the name for the symptom of mishearing words?

There’s a really interesting symptom I remember hearing about, wherein the patient will fail to understand certain sounds correctly, in a repeatable fashion. For example, the patient could be ...
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2answers
59 views

Biochemistry of (tap water) iontophoresis?

I'm curious to know what science has to say about the biochemical processes of tap water iontophoresis. I was trying to find some insights from the mechanism of action to answer things like: Why does ...
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Reference request: Parkinson's disease book

I am about start a project on computational modelling of basal ganglia in the context of Parkinson's disease. My background is mostly on computational side (and some neuroscience too) and I know ...
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1answer
84 views

how to stop frequent nocturnal emission [closed]

My age is 28 . I am male and i am un married I do not watch any content that may arouse feelings but still i face the problem of nocturnal emission (without any dream) approximately twice a week ...
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1answer
140 views

Why can't surgeons operate on nerves?

Why can't surgeons operate on nerves? We see when operating, surgeons always try to protect the major nerves. Doctors handle bones, muscles, tissues but not nerves. Why? Can they see the nerves?
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1answer
212 views

What are normal values for EMG/nerve conduction studies?

Where can I find a detailed table of normal values for NCS (nerve conduction studies) for the various arm nerves - ulnar, median, radial; including both motor and sensory component of each nerve; ...
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2answers
73 views

Can aphasia like symptoms be caused by something other than physical trauma to the brain?

From what I've read, Aphasia is always caused by trauma, either a head injury, stroke, etc. Are there linguistic disorders related to the brain selecting the wrong word etc. that are physiological or ...
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Is there any data about the significance of a blood serotonine level test and links to depression or other psychiatric diseases, or simply mood?

What does low or high blood serotonine levels tell us. Is there any data on the link between certain conditions and serum serotonine concentration?
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1answer
46 views

Why aren't children affected by pins and needles as much as adults?

If I sit down cross-legged on the floor for any more than about ten minutes I start to get pins and needles, and this seems to be common among other adults I have spoken to. My 3 year old daughter on ...
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3answers
230 views

What ingredients in this list are causing my hands to get warm? (improve circulation to my fingers) [closed]

EDIT: scroll down towards the bottom towards the bottom for my answer. Its thoracic outlet syndrome. If I do certain stretches it goes away. Its an issue related to my bad posture and nerves getting ...
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1answer
106 views

Are aluminum profiles dangerous?

I am thinking about building racing rig from aluminium profiles. Something like this: Original image here: http://www.simracingmachines.com/images/builds/rig2014/IMG_1686s.jpg I would like to have ...
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1answer
75 views

ECT and retrograde amnesia

ECT is shock treatment. It is used to treat psychological disorders. How much of it causes how much of retrograde amnesia, is there any quantification?
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80 views

Is it possible to “sleep” while aware and cognizant?

I have a scenario, but before I begin, I would like to clarify that this is not Sleep Paralysis, nor Lucid Dreaming, nor what I understand a Trance to be. Let's say that someone decided they needed to ...
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Do pharmaceuticals which increase dopamine and norepinephrine levels in the brain significantly increase histamine levels?

I imagine any medication that has an effect on catecholamines would in some way increase histamine levels as well, just for the fact that histamine is part of the 'fight or flight' response and seems ...
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1answer
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Why I am lossing memory if I work hard? [closed]

I am a software engineer and you know that it requires to think in logical way to develop code. I am also hard working to reach the dead lines just to do not loss job. But from last 6 months ...
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23 views

Nicotinic receptors stimulation

I came across this question today, it says: Nicotinic receptors stimulation is directly responsible for … I should fill the spaces by one of the following choices: Increasing the excitability of ...
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3answers
12k views

Which part of the body has the most nerve receptors?

I am studying a non-medical field so please bear with me. Which part of the flat skin has the most nerve receptors? I plan to build a grid of vibrators.
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1answer
155 views

What (if any) are the measurement units for neurotransmitters?

I've searched through the web for how to measure neurotransmitters (such as dopamine, serotonin, and oxytocin), but could not find any. Could someone please specify if there is a unit of measurement, ...
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594 views

Any link between Cubital Tunnel Syndrome and “chronic” tendonitis?

Is there any evidence linking Cubital Tunnel Syndrome to "chronic" (persistent, non-healing) tendonitis or any other long-term/chronic issues with connective tissue in the elbow region?