'The Santa Ana, which is named for one of the canyons it rushes through, is a foehn wind, like the foehn of Austria and Switzerland and the hamsin of Isreal. There are a number of persistent malevolent winds, perhaps the best known of which are the mistral of France and the Meditarranean sirocco, but a foehn wind has distinct characteristics: it occurs on the leeward slope of a mountain range and, although the air begins as a cold mass, it is warmed as it comes down the mountain and appears finally as a hot dry wind. Whenever and wherever a foehn blows, doctors hear about headaches and nausea and allergies, about "nervousness", about "depression". In Los Angeles some teachers do not attempt to conduct formal classes during a Santa Ana, because the children become unmanageable. In Switzerland the suicide rate goes up during the foehn, and in the courts of some Swiss cantons the wind is considered a mitigating circumstance for crime.'
Joan Didion, 'Los Angeles Notebook'
In Austria, 25-year-olds sleep badly, complain of headaches and show signs of restlessness.