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Essay on neurobiological basis of addiction
Simple neurobiology of addiction
Neurophysiology Of Addiction
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Trigeminal Autonomic Cephalalgias (TACs) are highly interesting to me: This group of unilateral, excruciating primary headaches is accompanied by ipsilateral cranial autonomic symptoms and comprises of three major forms:
1. Cluster Headache (CH)
2. Paroxysmal Hemicrania (PH)
3. Short unilateral neuralgiform headache (with conjunctival injection and tearing and cranial autonomic symptoms) (SUNCT/SUNA)
The borders between the different forms are very fluid and the specific conditions are often misdiagnosed as a strong migraine, causing the patients to suffer significant pain before treatment is started. Which directly links to another problem: The treatment. Oxygen treatment seems promising, yet it is not readily available to the patients. Orally administered triptans are usually too weak and nasally administered triptans (e.g. ZOMIG) cannot be used in a sufficient frequency to relieve the pain during the whole day, especially in the case of Paroxysmal Hemicrania where attacks are generally of shorter duration yet of higher intensity. Therefore, patients still need to resort to taking a significant amount of painkillers which is medically problematic since an attack period can last up to several months or even years in the case of chronic conditions which 10-15% of cluster headache patients suffer from.
The inadequate treatment and difficult diagnosis is a results of the uncertainty around the subject of TACs: They are still quite unresearched and while the connection with the trigeminal nerve is already made, the underlying cause for TACs remains unknown. There are currently two leads for the causes: Rafael Benoliel of the Hebrew University of Jerusalem found that that during an attack there is much more activity in the hypot...
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...ests, but also electroencephalographic tests that will show me precise brain activity. Furthermore, it is highly possible and very probable that this increase in IQ is not directly caused by the chemical species of alcohol but by the personality traits that lead to a higher alcohol consumption. Again, this would be very interesting to analyse with the help of electroencephalographic tests. At Hopkins, I would be able to seek mentorship from professors Mark P. Mattson, Hey-Kyoung Lee and Jay Baraban, experts in neurodegenerative diseases, synaptic plasticity and neuronal plasticity respectively. The guidance and opinions of these scientists will provide crucial help in my process of researching this topic.
Johns Hopkins is the place to be when it comes to research and I am certain that whatever I need in order to conduct my research, it will be available at Hopkins.
Purpose- To identify the functions of the cranial nerve of the peripheral nervous system such as the olfactory, optic, oculomotor, trochlear, trigeminal, abducens, facial, vestibulocochlear, glossopharyngeal, vagus, accessory, and the hypoglossal nerves. I will examine these functions with a series of behavior tests on my partner Jazmine Cooley to see if all nerves are functioning properly and if they are not, then this will be considered an identified dysfunction of a cranial nerve which is a diagnosis. Materials and Methods- Gloves Container full of substance Standardized eye chart Tape line
“One example of acquire peripheral neuropathy is trigeminal neuralgia (also known as tic doulcunex), in which the damage to the trigeminal nerve (the largest nerve of the head and face) causes episodic attacks of excruitiating, lightning-like pain on one side of the face” (Peripheral Neuropathy Fact Sheet).
The 84 year old woman is experiencing several symptoms that would indicate that she has suffered an injury to her third cranial nerve, also known as the oculomotor nerve. The oculomotor nerve is responsible for eye movement, allows the pupil to constrict, and allows the person to focus on near objects such as reading. This ability to focus is also known as accommodation.
...ure anesthesia, auricular needling is often used. By stimulating sensory receptors at auricular points, signals inputted into the body are transmitted through the trigeminal lemniscuses instead of the spinal cord. There were studies demonstrated anterior and posterior portions of the nucleus of spinal tract of trigeminal nerve had similar feedback effects to the gate system in the posterior horn of spinal cord, which could be used to modulate transmissions of pain impulses. This might be able to explain why auricular acupuncture has analgesia effects on surgical or painful irritation on the head and face. However, anesthesia effects of auricular acupuncture during thoracic and abdominal surgeries cannot be explained by any hypotheses about the gate control occurring at either posterior horns of the spinal cord or the nucleus of spinal tract of trigeminal nerve [27].
Migraine headaches affect an estimated 36 million Americans, or about 12% of the population, surpassing asthma at 8.3% (25 million) and diabetes at 7.8% (23.6 million). Migraines are much more common in women than in men--about 3 times more common. Nearly 30% of women will experience at least one episode of migraine headaches in their lifetime, most commonly in the third and sixth decades of life. However, migraines can affect anyone at any age and from any ethnic group. In addition to indirect expenses like missed work/school and lost productivity, the American Migraine Foundation estimates that migraines cost Americans more than $20 billion annually. Migraine sufferers are also more likely to experience anxiety, depression, sleep disorders, fatigue, and other pain conditions, and those who experience visual disturbances called “auras” associated with migraines are at an increased risk of heart attack and stroke. Unfortunately, there is no cure for migraines. The best treatment options available only to seek to reduce frequency of attacks or treat an attack once one has begun, and medication use is often limited by side effects and difficulty of administration. The American Migraine Foundation itself labels current treatment options “far from perfect” and concludes, “Undoubtedly, better treatments are needed.” Filling this therapeutic void is the primary objective of NuPathe Inc. (very recently acquired by Teva Pharmaceutical Industries Ltd.) with Zecuity®, a sumatriptan iontophoretic transdermal system.
Our patient Ms. Blum is a 28-year-old white female who presents with symptoms of a migraine, such as waking up by a severe headache that she states is often made worse when she turns on the light. In addition, Ms. Blum presents with several factors that can trigger her migraines including her lack of sleep, her stressful life as concluded by her statement that this has been a difficult period in her life and her approaching deadline to turn in her dissertation, her weekend alcohol consumption, her menstrual cycle since she notices that a couple of days before her period starts she experiences these headaches, also she states that food doesn’t seem to appeal to her and it takes her effort to eat a meal, and her diagnosis of major depressive disorder.
I will leave you with this: Imagine you feel a sudden pain on the left side of your head that radiates down your neck so agonizing that your vision begins to blur, making you sick to your stomach at the thought of your anguish. Would you have the knowledge to identify your ailment solely with these symptoms and pinpoint possible causes to treat or seek treatment for your suffering with the information I have given you
This case was interesting and was chosen for this SOAP note and discussion. Several things were captured in this learning opportunity. First of all, the assessment piece needed to include all of the potential differentials. I discovered myself relying on patterned learning to recall what areas should this focused exam include. Headaches are broad symptoms that can potentially result from many system alterations and can be related to many differentials. Initially, I considered migraine/tension headache history, acute illness (infection/sinusitis), acute injury (trauma or brain bleed), cerebral abnormality (aneurysm/stroke), and secondary causes related to uncontrolled HTN. I then began to narrow the differentials the most likely diagnosis such as tension-type headache based on the details obtained from the history/physical. Next, I began to consider treatment for tension-type headaches. The area of learning in the case was related to the additional treatment with Lyrica for the headaches. I considered the typical interventions such as rest, non-steroidal anti-inflammatory agents, stress reduction, diet, and trigger recognition. I considered the influence of co-morbid condition management, such as HTN, DM, and obesity. I had not considered that the HA potentially be related to her fibromyalgia (FM). According
For my second choice host laboratory, Brookhaven National Lab, the activities and research established in the bioscience department are of the greatest interest to me. I had previously visited Brookhaven National Lab for a tour of the various facilities when I was younger. One facility in particular that stuck out in my memory was the national synchrotron light source. The ability to use light as an analytical tool still almost seems almost like a fantasy to me. If possible, I would like to be able to see for myself the applications of the NSLS in biological, pharmaceutical, or medical investigations. Due to my experience with neurobiology and physics research, individual labs that I feel would be good fits for me would be the neuroimaging, imaging instrumentation, and molecular/structural biology research groups.
To diagnose the main cause of TJ pain, history, physical examination, laboratory tests, and imaging studies must be
Migraines are one of the most common, episodic disorders, in which the patient experiences a severe headache that may also accompany with nausea, and/or light and sound sensitivity. Migraine pain can be mild to severe in intensity and can last four to seventy hours (Buttaro, Trybulski, Bailey, and, Sandberg-Cook, 2013). It usually has a preliminary period in which patients can experience tiredness, decreased concentration, irritability, and noticeable yawning. Warning signs like these may occur several hours or even days before the full onset of the migraine episode (Sprenger and Goadsby, 2009). Patients can experience a migraine with or without aura. The aura is described as a visual disturbance where a patient sees shimmering bright light,
vestibular lesion, tinnitus, severe head trauma, lesion of the facial nerve, disorder of the cervical
A migraine is a severe, debilitating headache that hosts a large variety of neurological symptoms such as throbbing pain on one or both sides of the head, dizziness, nausea, vomiting, disturbances in vision, numbness in face or extremities, sensitivity to light, sound, smell and touch. An individual experiencing a migraine may suffer from one or many of these symptoms during an attack. Each migraine attack can vary in it's symptoms and severity making it difficult for a correct medical diagnosis to be made. About 15-20% of people experience aura symptoms (visual disturbances) before the onset of their migraine (About Migraine, n.d.).
Quinn C., Chandler C., Moraska A., (2002). American journal of public health. Massage Therapy and Frequency of Chronic Tension headaches received March 24, 2009, from EBSCO database
Migraine cannot be cure, but with proper treatment it can be manage. To manage your migraine it is very imperative that you keep a headache log, know the triggers for migraine, understands your medications and know the signs that needs to be reported to the doctor.