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	<title>Glabellar reflex - Revision history</title>
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	<updated>2026-04-26T19:57:42Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://wikimd.org/index.php?title=Glabellar_reflex&amp;diff=6508125&amp;oldid=prev</id>
		<title>Prab: CSV import</title>
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		<updated>2025-03-17T13:29:29Z</updated>

		<summary type="html">&lt;p&gt;CSV import&lt;/p&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 13:29, 17 March 2025&lt;/td&gt;
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		<author><name>Prab</name></author>
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	<entry>
		<id>https://wikimd.org/index.php?title=Glabellar_reflex&amp;diff=6238650&amp;oldid=prev</id>
		<title>Prab: CSV import</title>
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		<updated>2025-02-10T18:32:02Z</updated>

		<summary type="html">&lt;p&gt;CSV import&lt;/p&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 18:32, 10 February 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l21&quot;&gt;Line 21:&lt;/td&gt;
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		<author><name>Prab</name></author>
	</entry>
	<entry>
		<id>https://wikimd.org/index.php?title=Glabellar_reflex&amp;diff=5203887&amp;oldid=prev</id>
		<title>Prab: CSV import</title>
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		<updated>2024-02-22T02:35:03Z</updated>

		<summary type="html">&lt;p&gt;CSV import&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;&amp;#039;&amp;#039;&amp;#039;Glabellar reflex&amp;#039;&amp;#039;&amp;#039; is a [[neurological]] reflex that is elicited by repetitive tapping on the [[forehead]]. The reflex is named after the [[glabella]], the space between the eyebrows and above the nose. The normal response is for the [[eyelids]] to blink in response to the first one or two taps. If the blinking continues, this is known as &amp;#039;&amp;#039;Myerson&amp;#039;s sign&amp;#039;&amp;#039;, which is often associated with [[Parkinson&amp;#039;s disease]] and other neurological disorders.&lt;br /&gt;
&lt;br /&gt;
==Mechanism==&lt;br /&gt;
The glabellar reflex is mediated by the [[trigeminal nerve]] and the [[facial nerve]]. The trigeminal nerve senses the tapping on the forehead, and the facial nerve causes the eyelids to blink. In healthy individuals, the reflex is inhibited by the [[frontal lobe]] of the [[brain]] after the first one or two taps. If the blinking continues, this suggests that there is a problem with the frontal lobe&amp;#039;s inhibitory function.&lt;br /&gt;
&lt;br /&gt;
==Clinical significance==&lt;br /&gt;
The glabellar reflex is used in neurological examinations to assess the function of the frontal lobe and the trigeminal and facial nerves. A positive glabellar reflex (i.e., continued blinking in response to tapping) is known as &amp;#039;&amp;#039;Myerson&amp;#039;s sign&amp;#039;&amp;#039;. This sign is often seen in patients with Parkinson&amp;#039;s disease, but it can also be seen in other neurological disorders, such as [[progressive supranuclear palsy]] and [[corticobasal degeneration]].&lt;br /&gt;
&lt;br /&gt;
==See also==&lt;br /&gt;
* [[Neurological examination]]&lt;br /&gt;
* [[Parkinson&amp;#039;s disease]]&lt;br /&gt;
* [[Trigeminal nerve]]&lt;br /&gt;
* [[Facial nerve]]&lt;br /&gt;
&lt;br /&gt;
==References==&lt;br /&gt;
&amp;lt;references /&amp;gt;&lt;br /&gt;
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{{stub}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Neurology]]&lt;br /&gt;
[[Category:Reflexes]]&lt;br /&gt;
[[Category:Medical signs]]&lt;/div&gt;</summary>
		<author><name>Prab</name></author>
	</entry>
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