{"id":1950,"date":"2020-11-10T19:16:57","date_gmt":"2020-11-10T19:16:57","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=1950"},"modified":"2020-11-10T19:16:57","modified_gmt":"2020-11-10T19:16:57","slug":"itching-a-complex-and-annoyance","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/vi\/science\/human-biology\/itching-a-complex-and-annoyance\/","title":{"rendered":"Ng\u1ee9a: Hi\u1ec7n t\u01b0\u1ee3ng ph\u1ee9c t\u1ea1p v\u00e0 g\u00e2y kh\u00f3 ch\u1ecbu"},"content":{"rendered":"

Ng\u1ee9a: M\u1ed9t c\u1ea3m gi\u00e1c ph\u1ee9c t\u1ea1p v\u00e0 kh\u00f3 ch\u1ecbu<\/h2>\n\n

Ng\u1ee9a: M\u1ed9t c\u1ea3m gi\u00e1c \u0111\u1ed9c \u0111\u00e1o<\/h2>\n\n

Ng\u1ee9a, c\u1ea3m gi\u00e1c kh\u00f3 ch\u1ecbu khi\u1ebfn ch\u00fang ta ph\u1ea3i g\u00e3i, l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng ph\u1ee9c t\u1ea1p v\u1edbi m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c \u0111\u01b0\u1eddng d\u1eabn th\u1ea7n kinh chuy\u00ean bi\u1ec7t d\u00e0nh ri\u00eang cho n\u00f3. Kh\u00f4ng gi\u1ed1ng nh\u01b0 c\u01a1n \u0111au, \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1edfi s\u1ef1 k\u00edch ho\u1ea1t nh\u1eb9 c\u00e1c th\u1ee5 th\u1ec3 \u0111au, ng\u1ee9a ph\u00e1t sinh t\u1eeb c\u00e1c \u0111\u01b0\u1eddng d\u1eabn n\u01a1-ron chuy\u00ean bi\u1ec7t.<\/p>\n\n

Chu k\u1ef3 ng\u1ee9a-\u0111au-ng\u1ee9a<\/h2>\n\n

G\u00e3i c\u00f3 th\u1ec3 t\u1ea1m th\u1eddi l\u00e0m gi\u1ea3m ng\u1ee9a, nh\u01b0ng c\u0169ng c\u00f3 th\u1ec3 l\u00e0m ng\u1ee9a n\u1eb7ng h\u01a1n v\u1ec1 l\u00e2u d\u00e0i. \u0110i\u1ec1u n\u00e0y l\u00e0 do g\u00e3i g\u00e2y \u0111au, l\u1ea5n \u00e1t c\u1ea3m gi\u00e1c ng\u1ee9a trong m\u1ed9t th\u1eddi gian. Tuy nhi\u00ean, khi c\u01a1n \u0111au qua \u0111i, c\u01a1n ng\u1ee9a c\u00f3 th\u1ec3 quay tr\u1edf l\u1ea1i d\u1eef d\u1ed9i h\u01a1n.<\/p>\n\n

Vai tr\u00f2 c\u1ee7a serotonin<\/h2>\n\n

C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 ph\u00e1t hi\u1ec7n ra r\u1eb1ng ch\u1ea5t d\u1eabn truy\u1ec1n th\u1ea7n kinh serotonin \u0111\u00f3ng vai tr\u00f2 trong c\u1ea3 \u0111au v\u00e0 ng\u1ee9a. Khi ch\u00fang ta g\u00e3i, serotonin d\u01b0 th\u1eeba \u0111\u01b0\u1ee3c gi\u1ea3i ph\u00f3ng, kh\u00f4ng ch\u1ec9 c\u00f3 th\u1ec3 k\u00edch ho\u1ea1t c\u00e1c n\u01a1-ron \u0111i\u1ec1u ch\u1ec9nh \u0111au m\u00e0 c\u00f2n k\u00edch ho\u1ea1t c\u00e1c n\u01a1-ron l\u00e0m t\u0103ng c\u1ea3m gi\u00e1c ng\u1ee9a. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t v\u00f2ng lu\u1ea9n qu\u1ea9n kh\u00f3 ch\u1ecbu: ng\u1ee9a, g\u00e3i, \u0111au, serotonin, ng\u1ee9a\u2026 v.v.<\/p>\n\n

Hi\u1ec3u v\u1ec1 ng\u1ee9a m\u00e3n t\u00ednh<\/h2>\n\n

Ng\u1ee9a m\u00e3n t\u00ednh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn h\u00e0ng tri\u1ec7u ng\u01b0\u1eddi, g\u00e2y kh\u00f3 ch\u1ecbu v\u00e0 \u0111au kh\u1ed5 \u0111\u00e1ng k\u1ec3. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111ang \u0111\u1ea1t \u0111\u01b0\u1ee3c ti\u1ebfn b\u1ed9 trong vi\u1ec7c hi\u1ec3u \u0111\u01b0\u1ee3c s\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a b\u1ec7nh ng\u1ee9a, bao g\u1ed3m vai tr\u00f2 c\u1ee7a c\u00e1c s\u1ee3i th\u1ea7n kinh \u0111\u1eb7c bi\u1ec7t \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec3 ng\u1ee9a. Nh\u1eefng s\u1ee3i th\u1ea7n kinh n\u00e0y c\u00f3 t\u1ed1c \u0111\u1ed9 d\u1eabn truy\u1ec1n c\u1ef1c k\u1ef3 th\u1ea5p, gi\u1ea3i th\u00edch t\u1ea1i sao ng\u1ee9a r\u1ea5t ch\u1eadm ph\u00e1t tri\u1ec3n v\u00e0 gi\u1ea3m b\u1edbt.<\/p>\n\n

S\u1ee3i th\u1ea7n kinh v\u00e0 ng\u1ee9a<\/h2>\n\n

Kh\u00f4ng gi\u1ed1ng nh\u01b0 c\u00e1c s\u1ee3i th\u1ea7n kinh \u0111au ch\u1ec9 bao ph\u1ee7 m\u1ed9t v\u00f9ng nh\u1ecf, m\u1ed9t s\u1ee3i ng\u1ee9a duy nh\u1ea5t c\u00f3 th\u1ec3 nh\u1eadn bi\u1ebft c\u1ea3m gi\u00e1c ng\u1ee9a t\u1eeb kho\u1ea3ng c\u00e1ch h\u01a1n ba inch. \u0110i\u1ec1u n\u00e0y gi\u1ea3i th\u00edch t\u1ea1i sao \u0111\u00f4i khi c\u1ea3m th\u1ea5y ng\u1ee9a nh\u01b0 th\u1ec3 ng\u1ee9a xu\u1ea5t ph\u00e1t t\u1eeb m\u1ed9t v\u1ecb tr\u00ed kh\u00e1c v\u1edbi v\u1ecb tr\u00ed b\u1ecb k\u00edch \u1ee9ng th\u1ef1c t\u1ebf.<\/p>\n\n

Ch\u1ea5t d\u1eabn truy\u1ec1n th\u1ea7n kinh v\u00e0 ng\u1ee9a<\/h2>\n\n

C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u c\u0169ng \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c m\u1ed9t ch\u1ea5t d\u1eabn truy\u1ec1n th\u1ea7n kinh truy\u1ec1n “th\u00f4ng \u0111i\u1ec7p ng\u1ee9a” d\u1ecdc theo c\u00e1c s\u1ee3i th\u1ea7n kinh v\u00e0 \u0111\u1ebfn n\u00e3o. Ch\u1ea5t d\u1eabn truy\u1ec1n th\u1ea7n kinh n\u00e0y gi\u00fap gi\u1ea3i th\u00edch c\u00e1ch c\u00e1c c\u1ea3m gi\u00e1c ng\u1ee9a \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i v\u00e0 x\u1eed l\u00fd b\u1edfi h\u1ec7 th\u1ea7n kinh.<\/p>\n\n

C\u00e2u h\u1ecfi ch\u01b0a c\u00f3 l\u1eddi gi\u1ea3i \u0111\u00e1p<\/h2>\n\n

M\u1eb7c d\u00f9 \u0111\u00e3 c\u00f3 nh\u1eefng ti\u1ebfn b\u1ed9 trong vi\u1ec7c hi\u1ec3u v\u1ec1 ng\u1ee9a, nh\u01b0ng v\u1eabn c\u00f2n nhi\u1ec1u c\u00e2u h\u1ecfi ch\u01b0a c\u00f3 l\u1eddi gi\u1ea3i \u0111\u00e1p. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u v\u1eabn \u0111ang \u0111i\u1ec1u tra c\u00e1c c\u01a1 ch\u1ebf ch\u00ednh x\u00e1c g\u00e2y ra ng\u1ee9a v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 g\u00f3p ph\u1ea7n g\u00e2y ng\u1ee9a m\u00e3n t\u00ednh.<\/p>\n\n

K\u1ebft lu\u1eadn<\/h2>\n\n

Tr\u1ea3i nghi\u1ec7m ng\u1ee9a l\u00e0 s\u1ef1 t\u01b0\u01a1ng t\u00e1c ph\u1ee9c t\u1ea1p gi\u1eefa c\u00e1c t\u1ebf b\u00e0o, ph\u00e2n t\u1eed v\u00e0 m\u1ea1ch th\u1ea7n kinh. M\u1eb7c d\u00f9 c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 \u0111\u1ea1t \u0111\u01b0\u1ee3c ti\u1ebfn b\u1ed9 \u0111\u00e1ng k\u1ec3 trong vi\u1ec7c hi\u1ec3u v\u1ec1 chu k\u1ef3 ng\u1ee9a-\u0111au-ng\u1ee9a, nh\u01b0ng v\u1eabn c\u00f2n nhi\u1ec1u c\u00e2u h\u1ecfi ch\u01b0a c\u00f3 l\u1eddi gi\u1ea3i \u0111\u00e1p. Nghi\u00ean c\u1ee9u \u0111ang \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh nh\u1eb1m m\u1ee5c \u0111\u00edch l\u00e0m s\u00e1ng t\u1ecf th\u00eam nh\u1eefng b\u00ed \u1ea9n v\u1ec1 ng\u1ee9a v\u00e0 ph\u00e1t tri\u1ec3n c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tr\u1ecb hi\u1ec7u qu\u1ea3 h\u01a1n cho ng\u1ee9a m\u00e3n t\u00ednh.<\/p>","protected":false},"excerpt":{"rendered":"

Ng\u1ee9a: M\u1ed9t c\u1ea3m gi\u00e1c ph\u1ee9c t\u1ea1p v\u00e0 kh\u00f3 ch\u1ecbu Ng\u1ee9a: M\u1ed9t c\u1ea3m gi\u00e1c \u0111\u1ed9c \u0111\u00e1o Ng\u1ee9a, c\u1ea3m gi\u00e1c kh\u00f3 ch\u1ecbu khi\u1ebfn ch\u00fang ta ph\u1ea3i g\u00e3i, l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng ph\u1ee9c…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4166],"tags":[4163,4162,1579,4164,4165],"class_list":["post-1950","post","type-post","status-publish","format-standard","hentry","category-human-biology","tag-pain","tag-itching","tag-neuroscience","tag-neurotransmitters","tag-nerve-fibers"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/1950","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/comments?post=1950"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/1950\/revisions"}],"predecessor-version":[{"id":1951,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/1950\/revisions\/1951"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media?parent=1950"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/categories?post=1950"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/tags?post=1950"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}