Nicotinic acid therapy in vasoconstriction type of headache.
D006261:Headache / Q000209:etiology*; D006801:Humans; D009525:Niacin / Q000627:therapeutic use*; D009539:Nicotinic Acids; D014661:Vasoconstriction
D009539:Nicotinic Acids; D009525:Niacin
HEADACHE/etiology and pathogenesis; NICOTINIC ACID/therapeutic use