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			| 1.
								pain in the head caused by dilation of cerebral arteries or muscle contractions or a reaction to drugs 2.
								something or someone that causes anxiety; a source of unhappiness
 3.
								pain in the head caused by dilation of cerebral arteries or muscle contractions or a reaction to drugs
 
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		| Variations of 'headache' |  
		| ache
					
		
					
		aching
					
		
									
		negative stimulus |  
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