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Unraveling The Mystery Of Ice Cream Headaches – The ‘Brain Freeze Phenomenon’ – Neuroscience News 825706221773 Summary Summer treats can often cause the dreaded “brain freeze”. Researchers believe that this sudden pain is caused by the brain’s reaction when the temperature inside the head rapidly drops. It causes an increase in blood circulation to warm up the area, and the sudden expansion of blood vessel is interpreted by the brain as pain. These headaches can be relieved by eating cold foods more slowly or warming the roof of your lips. Key Facts Brain freeze is a sudden pain that occurs in the head as a result of rapid cooling. The brain then responds by warming up the affected area. The brain’s response to heat causes the sudden expansion of blood vessel in the roof of your mouth. This is perceived as pain. Although it is unpleasant, brain freeze is not harmful. It can be avoided by eating cold foods more slowly or warming the roof of your mouth. Source: Virginia Tech Summer brings picnics and outdoor barbecues. But it also brings ants, sunburns, mosquitos and other unpleasant things. Even sweet, refreshing delights such as ice cream or carbonated slushies may cause an unpleasant surprise – the dreaded ‘brain freeze,’ a sudden, splitting migraine. What is a brain freeze, and how can you enjoy a cool treat without having to suffer one? Kristofer Rau, a Virginia Tech neuroscientist, explains how to avoid these headaches or at least make the pain go away faster. Q: What causes a “brain freezing”? The ‘ice-cream headache’ or “brain freeze” is a sudden, intense pain in the head that you experience when you drink or eat something very cold. Your brain has an important job in ensuring that certain parts of your body are kept within specific temperature ranges. [embedded content] Credit: Neuroscience News “Your head is important. The normal response to a cool stimulus inside your head is to try and warm that area up again. This is done by increasing the flow rate of warm blood in the blood vessels on the roof of the mouth. “This rapid expansion of blood vessels was perceived by nerve cells but the brain interpreted it as something painful.” Q: Why does it hurt? The suddenness of the blood vessel expansion causes a burst in activity in the nerve ends in the roof of the mouth. This intensity is interpreted as something we need to pay attention to immediately and do something about. The nerve endings can detect similar changes in blood vessel size, but they are more gradual. Q. How dangerous is a “brain freezing”? “Although the pain is unpleasant, it’s your brain’s way of protecting our body. Even though a temporary cold stimulus will not cause any damage, in this case. A ‘brain-freeze’ is not harmful, and should subside within a few minutes or seconds. Q: How can you counter a “brain-freeze”? Everyone is susceptible to a “brain freeze”. If you get a “brain freeze”, you can either drink a beverage that is at room temperature or you can press your tongue against your roof of mouth to quickly warm up the area. You can reduce the risk of a “brain freeze” by eating or drinking cold foods more slowly so that your body adjusts.” Q. How can you avoid a snare? “The only way you can completely avoid having one is to avoid eating anything cold.” It would be a sad summer without ice-cream and popsicles, so the risk of a ‘brain freezing’ is worth it. This neuroscience news is about Author: Mike Allen Source: Virginia Tech Contact: Mike Allen – Virginia Tech ImageThe image has been credited to Neuroscience News

Mom, 32, has had headaches and blurred vision for five days. She was having an stroke. In January, Amanda Lenza’s head hurt. Five days later, the pain spread from the back to the front of Amanda Lenza’s face. She woke up one morning with double vision after she wobbled. “That really caught me off guard,” says the 32-year old freelance ghostwriter from Lorain, Ohio, to TODAY.com. “I began texting my husband. I thought, “This is really strange.” “I don’t believe something is wrong. She lost feeling on the left side. Her husband called an ambulance when he returned home. She recalls: “I asked the paramedics, pretty much to their faces, “Am I having stroke symptoms because I feel that these are stroke-like symptoms?” Each stroke symptom in 15 minutes Lenza was watching cartoons with her daughter when she noticed that her balance had shifted. She then started seeing twos of everything. Her symptoms worsened after she texted her husband to ask for help. She was unable to stand and slumped on the couch. Her speech felt garbled. She couldn’t move her left arm. Her face began to droop on the left. Her symptoms were at their peak when she arrived at the hospital. She says, “I could not speak at all.” “I couldn’t move this side of my body… I began having trouble breathing.” Amanda Lenza was watching cartoons with daughter when she experienced double vision. She also couldn’t stand up without wobbling. Courtesy Amanda Lenza The doctors in the emergency room noticed that her vertebral vessels were blocked after a CT scan. They gave her a drug called a “really powerful clot-buster” to help break up blood clots that could lead to a stroke. Lenza’s case was not one of those times. “I got much worse, she says. She was transported by helicopter to the main campus of Cleveland Clinic. “I could not sit up or see straight, but I was aware,” she says. “All my brain damage was in the cerebral cortex and pons, (part of my brain stem), so it was physically affecting me. Mentally, I still had full awareness.” She was terrified and wanted to be with her daughter. She was terrified after the staff confirmed that she had a stroke. “I was wondering if I survived, how much of my body function would I be able to regain? Will I ever be able speak again? “Am I going to be in a position to care for my toddler?” Lenza asks. “I was afraid.” The doctors rushed her to surgery to place stents into her vertebral arterioles, the two arteries which run from the back of her neck to her brain. They only opened one. Rarely do people experience tears in both eyes. “The left one has been completely blocked.” She says it’s permanently damaged. “They put three stents in my right vertebral arterial.” After doctors removed her breathing tube she was able to sit up, move and speak again. After a day, she was able to get up and walk. She says, “It took a couple of weeks for me to re-learn to walk completely.” The National Institutes of Health states that the condition causes abnormal cell growth in artery walls, which contributes to the arteries bulging or contracting. She says that most people don’t even know they have it. “In my case (my arteries) are too weak.” She explains that doctors suspect that Lenza’s recent illness may have contributed to her problems. She had been ill for three weeks at the beginning of January. She was lying down and coughing hard with her head turned. This likely caused the rupture. Lenza explains, “It felt as if I had a torn neck muscle. So I ignored it.” “I never would have thought it was an artery damage. I thought I had just tweaked my neck. Bilateral dissection stroke Dr. Shazam Hassain, the doctor who treated Lenza, says that dissection of both vertebral arterioles is “unusual”. The director of the Cerebrovascular Centre at the Cleveland Clinic told TODAY.com that “we have two arteries running up the back our neck, called the vertebral vessels. These arteries go up to the rear of the brain.” “(She) had tears on both sides. Both on the left and right. When we see tears in blood vessels, there is probably a fragility to the blood vessels. Her doctors suspected that there was a underlying cause for her stroke, and this is how they discovered she had fibromuscular Dysplasia. The tears in her arteries made them “collapse,” which limited the blood flow to her head. Most people have it on one side, so they still receive some blood to the brain. Hussain claims that “Both tears limited the blood flow which resulted in… stroke”. They were only able to open the one side. “(With one) supplying blood flow… you’re good,” he says. “The other side was already closed.” It was not going to help her if she tried to open it, and it increased the risk.” He says that people often feel “very intense pain” when they dissect an animal. He says that “most people feel it is quite painful.” “It is unlike anything they have ever experienced before.” Amanda Lenza hasn’t been able to play with or carry her 16-month-old daughter as much since her stroke. She began walking while Lenza was hospitalized and that little bit independence helped. Courtesy Amanda Lenza Lenza’s symptoms are typical stroke signs. When it comes to stroke, people should be aware of BE FAST. BE FAST is: B : Balance E : Trouble with vision such as double vision or loss of sight F : Facial weakness A : Asymmetry, as in drooping on one side S : Slurred speech T : Time is brain Hussain says that a person who suffers a stroke will lose 2 million brain cells per minute. “The quicker you get to the emergency room, the faster the two types treatment will be provided.” Lenza’s life will be a little bit different now that she has experienced dissection. She cannot ride a rollercoaster anymore, she can’t keep her neck in an odd position for long periods and she shouldn’t lift anything. But her brain should be able to recover. Hussain claims that the brain has the ability to heal. Relearning and recovering Lenza estimates that she has regained ‘about 90% of her functions. She says, “I’m relearning how to type without looking at my hand.” “I don’t have that connection between my brain and hands anymore.” My balance was a bit off, but that’s improving gradually.” She also says that she has a delay in her speech and thoughts. She is grateful that she received treatment so quickly. “If I hadn’t acted so quickly, I don’t think I would still be here,” she says. “Time is crucial with strokes.” She hopes that her story will encourage others to take their own health concerns seriously. She says that mothers tend to put other things before themselves and don’t care for themselves as they should. “Paying more attention to my body and being a bit kinder on myself is the new model.”

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