久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

Imagined smells can precede migraines

Updated: 2011-10-17 10:46

(Agencies)

  Comments() Print Mail Large Medium  Small 分享按鈕 0

Hallucinated scents such as a burning or rotten smell, or even the scent of foie gras, can be a part of the "aura" that some people perceive before a migraine attack, although it is rare, according to a US study.

About 30 percent of people with recurrent migraines have sensory disturbances shortly before their headache hits, known as aura, but these are usually visual, such as flashes of light or blind spots. Tingling sensations or numbness, or difficulty speaking or understanding language, may also appear.

But the study, conducted by Matthew Robbins and colleagues at the Montefiore Headache Center in New York, found that a small number of people described smelling scents in conjunction with their headaches.

"It's uncommon, but distinctive," said Robbins, noting that disturbances in the sense of smell, known as olfactory hallucinations, have not been covered in a systematic review of medical literature before.

Researchers reviewed 25 reported cases of patients with headaches, migraines in most cases, and olfactory hallucinations. They also examined records from more than 2,100 patients seen over 30 months. Fourteen people, or just under 0.7 percent, had described smelling scents ahead of their headaches.

"The most common was of the burning or smoke variety," Robbins said.

Some sufferers described a general burning smell. Others said they smelled cigar smoke, wood smoke or burnt popcorn.

"Decomposition" odors, such as garbage or sewage, were the next most common smell reported. A few people described pleasant odours, including the scent of oranges, coffee or, in one case, foie gras.

About 11 percent of the world's population suffers from migraines, so even though olfactory hallucinations are an unusual part of aura, there could still be a fairly large number of people who experience them, Robbins said.

It's not clear why the hallucinated odors are most often unpleasant, or why they are only rarely part of migraine aura.

But aura symptoms are thought to involve a phenomenon called "cortical spreading depression," where a wave of increased electrical activity in nerve cells of the brain is followed by a wave of depressed activity, Robbins said.

That same phenomenon might underlie olfactory hallucinations -- and because the brain's smell centres occupy much less space than its sight centres, that could, in theory, explain why phantom scents are so much less common, he added.

It is also possible that some people with migraines and olfactory hallucinations do not recognise the phenomenon, he added. People know something is wrong when they see zigzag lines, but it is easy to assume a small is actually coming from somewhere.

Since some disorders, such as Parkinson's disease, can cause a person to smell scents that are not present, any such hallucinations without an accompanying headache should be checked out, he warned.

久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

    欧美日韩在线综合| 久久久久久电影| 肉肉av福利一精品导航| 欧美一区二区三区四区视频| 精品在线亚洲视频| 国产精品美女久久久久久久 | 久88久久88久久久| 国产精品嫩草影院av蜜臀| 91精品福利在线| 青青国产91久久久久久| 国产喷白浆一区二区三区| 色综合久久久久久久久| 日韩精品亚洲专区| 亚洲国产激情av| 欧美系列一区二区| 国产一区在线不卡| 亚洲精品第1页| 欧美一级欧美三级在线观看| 懂色一区二区三区免费观看| 一区二区免费视频| 精品日韩一区二区| 99精品久久只有精品| 日本不卡视频在线观看| 中文字幕中文在线不卡住| 欧美老人xxxx18| 成人免费av网站| 首页欧美精品中文字幕| 中文字幕av不卡| 制服丝袜中文字幕一区| 成人免费毛片aaaaa**| 天天亚洲美女在线视频| 国产日韩精品一区二区浪潮av| 欧美在线播放高清精品| 国产乱码精品1区2区3区| 一区二区高清视频在线观看| 欧美精品一区男女天堂| 91成人免费在线| 国产精品亚洲午夜一区二区三区| 亚洲综合在线观看视频| 国产欧美一二三区| 欧美一级黄色大片| 色999日韩国产欧美一区二区| 狠狠色丁香婷婷综合久久片| 亚洲愉拍自拍另类高清精品| 久久久久国色av免费看影院| 欧美久久久久久久久久| 91亚洲永久精品| 国产一区 二区| 视频一区欧美精品| 亚洲天堂福利av| 久久久久久9999| 欧美一区在线视频| 欧美综合欧美视频| 不卡av在线免费观看| 国产自产高清不卡| 日韩和的一区二区| 一区二区三区在线免费视频| 久久综合久久综合久久综合| 欧美日韩视频在线一区二区| 91丝袜国产在线播放| 国产suv精品一区二区三区| 日本中文字幕不卡| 亚洲电影一区二区| 亚洲视频在线一区观看| 国产日产欧产精品推荐色 | 久久精品一区蜜桃臀影院| 欧美二区在线观看| 在线观看av一区| 99精品久久免费看蜜臀剧情介绍| 国产精品99久久久久久久女警| 蜜桃视频在线观看一区二区| 亚洲午夜影视影院在线观看| 亚洲欧美另类综合偷拍| 国产欧美日韩精品a在线观看| 精品欧美黑人一区二区三区| 9191精品国产综合久久久久久| 在线精品视频免费播放| 99国产精品久久久久| 成人激情校园春色| 国产成人鲁色资源国产91色综 | 欧美丰满美乳xxx高潮www| 欧美图片一区二区三区| 色欧美乱欧美15图片| av午夜精品一区二区三区| 国产99久久久国产精品免费看| 久久草av在线| 久久99精品久久久久婷婷| 免费成人在线观看视频| 日韩成人午夜电影| 欧美a级一区二区| 免费一级欧美片在线观看| 日韩黄色小视频| 日本美女视频一区二区| 日韩高清在线不卡| 免费看精品久久片| 免费人成精品欧美精品| 日本 国产 欧美色综合| 蜜桃传媒麻豆第一区在线观看| 日本欧美在线观看| 久久精品国产99| 极品少妇xxxx精品少妇偷拍 | 欧美色国产精品| 欧美日韩国产片| 69成人精品免费视频| 欧美一区二区三区视频免费播放| 91精品国产手机| 精品福利一二区| 国产日产欧美一区| 中文字幕视频一区| 一区二区高清在线| 视频一区国产视频| 久久精品国产色蜜蜜麻豆| 国内精品国产成人| 国产成人综合网| 91天堂素人约啪| 欧美日韩二区三区| 日韩久久久精品| 久久久精品免费网站| 中文成人综合网| 一区二区三区产品免费精品久久75 | 国产欧美一区二区精品忘忧草| 中文一区在线播放| 亚洲另类在线一区| 首页综合国产亚洲丝袜| 久久er99热精品一区二区| 国产福利一区二区三区| 99久久综合色| 欧美亚洲一区二区在线| 91精品国产综合久久精品| 日韩免费一区二区| 中文字幕精品三区| 亚洲制服丝袜一区| 日本成人中文字幕| 福利视频网站一区二区三区| 91亚洲国产成人精品一区二三| 欧美日韩免费一区二区三区视频| 日韩一级精品视频在线观看| 久久久精品天堂| 一区二区三区四区视频精品免费 | 99久久精品国产观看| 欧美日韩国产另类不卡| 精品盗摄一区二区三区| 亚洲欧美日韩一区二区 | 国产精品人妖ts系列视频| 亚洲一区二区av在线| 美腿丝袜亚洲综合| 成人18精品视频| 欧美性受xxxx黑人xyx性爽| 欧美白人最猛性xxxxx69交| 中文字幕一区二区在线观看| 日韩精品亚洲一区| 成人午夜大片免费观看| 欧美日韩成人一区二区| 国产日韩欧美精品电影三级在线| 一区二区三区四区在线| 国产综合久久久久久鬼色| 色乱码一区二区三区88| 欧美tickling网站挠脚心| 中文字幕亚洲欧美在线不卡| 日韩经典中文字幕一区| www.av精品| 欧美一级国产精品| 亚洲视频免费观看| 精品亚洲porn| 欧美三级三级三级爽爽爽| 国产清纯美女被跳蛋高潮一区二区久久w | 国产欧美日韩三区| 午夜精品久久久久久久久久久| 国产一区二区三区免费看| 欧美日精品一区视频| 国产亚洲精品久| 日本麻豆一区二区三区视频| 91亚洲资源网| 久久久久久久久久久99999| 婷婷六月综合亚洲| 91在线观看一区二区| 精品国产乱码久久久久久1区2区| 亚洲乱码国产乱码精品精的特点| 国产精品自拍一区| 欧美一区二区三区爱爱| 一区二区高清免费观看影视大全| 国产乱码精品1区2区3区| 欧美一区二区在线播放| 一区二区欧美在线观看| 成人性色生活片免费看爆迷你毛片| 91精品国产综合久久香蕉麻豆| 亚洲日本青草视频在线怡红院| 韩国精品一区二区| 91精品国产品国语在线不卡| 一区二区在线观看视频在线观看| 国产a区久久久| 欧美mv和日韩mv的网站| 日日摸夜夜添夜夜添亚洲女人| 色综合天天综合网天天看片| 国产亚洲成av人在线观看导航 | 捆绑调教美女网站视频一区| 欧美视频在线观看一区二区| 亚洲情趣在线观看| 成人av电影免费观看| 欧美激情一区二区三区蜜桃视频|