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Doctor insights on: Sympathetic Nervous System Vasoconstriction

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Dr. Alan Ali Dr. Ali
2 doctors agreed:
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What causes overactive sympathetic nervous system?

Dr. Alan Ali Dr. Ali
2 doctors agreed:
What causes overactive sympathetic nervous system?

Dysautonomia: Several, such as Adrenal fatigue, Headaches, Hypertension, Heart disease, Food sensitivities, Chronic fatigue, Fibromyalgia, Depression, Anxiety, Alcoholism, Compulsive overeating, Insomnia, Irritable bowel, Obesity, ADHD, Overactive bladder, PTSD, Alzheimer, Parkinson's disease, Excess sweating. ...Read more

Vasoconstriction (Definition)

Vasoconstriction is the narrowing of the blood vessels resulting from contraction of the muscular wall of the vessels, particularly the large arteries and small arterioles. The process is the opposite of vasodilation, the widening of blood vessels. The process is particularly important in staunching hemorrhage ...Read more


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Which spinal nerves are associated with the sympathetic nervous system?

Which spinal nerves are associated with the sympathetic nervous system?

Learning: You have asked a lot of questions that are suggestive that this is related to school project. It is important to learn and not just look for a quick answer. Http://www. Merckmanuals. Com/home/brain_spinal_cord_and_nerve_disorders/autonomic_nervous_system_disorders/overview_of_the_autonomic_nervous_system. Html ...Read more

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Was wondering what are the differences between parasympathetic and sympathetic nervous system?

Was wondering what are the differences between parasympathetic and sympathetic nervous system?

Simple explanation: Sympathetic= fight or flight
Para= Rest and digest

One is the Gas pedal if you will
The other would be the bodies brakes.

Hope that helps! ...Read more

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I think I've overstimulated my sympathetic nervous system by repeated stage fright, and now my body overreacts to everything. How can I reverse this?

I think I've overstimulated my sympathetic nervous system by repeated stage fright, and now my body overreacts to everything. How can I reverse this?

Mindfullness Therapy: Sympathetic overdrive evokes fear, anger, & general uneasiness. Better to dominate with parasympathetic-related emotions of relaxation, digestion, orgasm, sleep, and appropriate bladder and bowel evacuations. Meditation, relaxation therapies, yoga, & biofeedback are some means to this end. Students learn to use mind to control body. Read relaxation response by dr. Benson & see heartmath. Com. ...Read more

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How could one calm down an over-active sympathetic nervous system?

How could one calm down an over-active sympathetic nervous system?

See below: First, not clear what you mean by over-active, as to me it could imply reflex sympathetic dystrophy, hyperthyroidism, even hypertension. Second, you need to explore possible underlying disorders which might cause disruption of autonomic nervous system. Third, is your lifestyle or food/alcohol/smoking an issue. Talk to your doctor and explore your concerns. ...Read more

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Is it true that chronotropic and inotropic effects are created by the sympathetic nervous system?

No: Positive inotropic and chronotropic effects are created by the sympathetic nervous system. Negative inotropic and chronotropic effects are created by the parasympathetic nervous system. ...Read more

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Is it possible for the sympathetic nervous system to be permanently in overdrive because of stimulant overuse?

Is it possible for the sympathetic nervous system to be permanently in overdrive because of stimulant overuse?

With Continuous Use: Stimulants activate the nervous system and overuse on a daily basis may make one feel on "overdrive". Discontinuing regular use may actually leave one feeling depleted rather than permanently stuck in overdrive. ...Read more

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Does the Vasodilation of migraine trigger sympathetic nervous system overreactiiob or other way around?

Does the Vasodilation of migraine trigger sympathetic nervous system overreactiiob or other way around?

Auras and migranes: Yes it does, you should pay attention to the symptoms which precede a migraine episode call auras, usually the auras are the same like: tunnel vision, nausea episodes. It is at this time that you should take your medication, which may prevent or markedly reduce symptoms. ...Read more

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Addressing strong Sympathetic Nervous System overactivity through Herbs? My body produces too much catecholamines, can this be tampered with herbs?

Addressing strong Sympathetic Nervous System overactivity through Herbs? My body produces too much catecholamines, can this be tampered with herbs?

Nope: If you really have a catecholamine excess caused by a pheochromocytoma then you need medical treatment and surgery, not some herbal remedy. Come on, it is the 21st century not the 18th. ...Read more

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What is the best med or supplement for and overactive sympathetic nervous system that doesn't sedate you? Thanks Docs!

What is the best med or supplement for and overactive sympathetic nervous system that doesn't sedate you? Thanks Docs!

???: There is such a condition as sympathetic hyperfunction syndrome, which has various manifestations; but the phrase "overactive sympathetic nervous system" is far too vague and imprecise to refer to any valid physiological concept. It sounds like something fanciful you'd hear in a health food store or from a reflexologist. You should repost describing in specific detail what you mean by it. ...Read more

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Can you tell me the relationship of the adrenal medulla to the sympathetic nervous system?

Can you tell me the relationship of the adrenal medulla to the sympathetic nervous system?

Yes: Hi. Yes, the adrenal medulla is the hormonal arm of the sympathetic nervous system (it is a component of the sympathetic nervous system). It helps mediate the "fight or flight" response. ...Read more

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How does Norepinephrin block pain in the Cns? Docs say I have an overactive sympathetic nervous system? Would nortriptyline create more symp cns problms

How does Norepinephrin block pain in the Cns? Docs say I have an overactive sympathetic nervous system? Would nortriptyline create more symp cns problms

Neurotransmitters: This is a very complex question, and you need to discuss this in detail with your treating physicians. Both Norepinephrine and serotonin act on the dorsal horns of the spinal cord to inhibit excessive transmission of nerve cell fibers, thereby decreasing the central (brain) perception of pain. Nortriptyline should not worsen that, and may help some. The SNRI's medications help with pain relief. ...Read more

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Why do the cholinergic agonist drugs act on the parasympathetic (but not the sympathetic) nervous system?

Why do the cholinergic agonist drugs act on the parasympathetic (but not the sympathetic) nervous system?

Cholinergic meds: This is a complicated question and cannot be properly answered in 400 spaces. See wikipedia.
Basically the receptors for parasympathetic system do not recognize the cholinergic molecules. ...Read more

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Does chronic strong sympathetic nervous system overreaction from stimulant use result in meaningfully reduced cerebral blood flow?

Does chronic strong sympathetic nervous system overreaction from stimulant use result in meaningfully reduced cerebral blood flow?

See below: BOLD studies show reduced circulation and metabolic function in very specific areas of the prefrontal cortex and limbic system. It is unclear if the circulation reduction is primary vs a primary reduction of activity in those areas ...Read more

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If I have an overdriven sympathetic nervous system (manifesting in tachycardia &restlessness) would that be a cause of my muscle rigidity? Sooo tight

If I have an overdriven sympathetic nervous system (manifesting in tachycardia &restlessness) would that be a cause of my muscle rigidity? Sooo tight

Possibly: Your system is in a high strung state and could cause muscle tightness and tension. I assume you have had endocrinology testing to rule out hyperthyroidism, pheochromocytoma, etc. If so, perhaps a stress management program would effectively treat your symptoms best and you have been recommended to avoid alcohol, caffeine and nicotine. Your physician would know best whether beta blockers would help. ...Read more