As to idiosyncrasies of the sense of touch, it is well known that some people cannot handle velvet or touch the velvety skin of a peach without having disagreeable and chilly sensations come over them. Prochaska knew a man who vomited the moment he touched a peach, and many people, otherwise very fond of this fruit, are unable to touch it. The Ephemerides speaks of a peculiar idiosyncrasy of skin in the axilla of a certain person, which if tickled would provoke vomiting. It is occasionally stated in the older writings that some persons have an idiosyncrasy as regards the phases of the sun and moon. Baillou speaks of a woman who fell unconscious at sunset and did not recover till it reappeared on the horizon. The celebrated Chancellor Bacon, according to Mead, was very delicate, and was accustomed to fall into a state of great feebleness at every moon-set without any other imaginable cause. He never recovered from his swooning until the moon reappeared.
Nothing is more common than the idiosyncrasy which certain people display for certain foods. The trite proverb, "What is one man's meat is another man's poison," is a genuine truth, and is exemplified by hundreds of instances. Many people are unable to eat fish without subsequent disagreeable symptoms. Prominent among the causes of urticaria are oysters, crabs, and other shell fish, strawberries, raspberries, and other fruits. The abundance of literature on this subject makes an exhaustive collection of data impossible, and only a few of the prominent and striking instances can be reported.
Amatus Lusitanus speaks of vomiting and diarrhea occurring each time a certain Spaniard ate meat. Haller knew a person who was purged violently by syrup of roses. The son of one of the friends of Wagner would vomit immediately after the ingestion of any substance containing honey. Bayle has mentioned a person so susceptible to honey that by a plaster of this substance placed upon the skin this untoward effect was produced. Whytt knew a woman who was made sick by the slightest bit of nutmeg. Tissot observed vomiting in one of his friends after the ingestion of the slightest amount of sugar. Ritte mentions a similar instance.
Roose has seen vomiting produced in a woman by the slightest dose of distilled water of linden. There is also mentioned a person in whom orange-flower water produced the same effect. Dejean cites a case in which honey taken internally or applied externally acted like poison. It is said that the celebrated Haen would always have convulsions after eating half a dozen strawberries. Earle and Halifax attended a child for kidney-irritation produced by strawberries, and this was the invariable result of the ingestion of this fruit. The authors personally know of a family the male members of which for several generations could not eat strawberries without symptoms of poisoning. The female members were exempt from the idiosyncrasy. A little boy of this family was killed by eating a single berry. Whytt mentions a woman of delicate constitution and great sensibility of the digestive tract in whom foods difficult of digestion provoked spasms, which were often followed by syncopes. Bayle describes a man who vomited violently after taking coffee. Wagner mentions a person in whom a most insignificant dose of manna had the same effect.
Preslin speaks of a woman who invariably had a hemorrhage after swallowing a small quantity of vinegar. According to Zimmerman, some people are unable to wash their faces on account of untoward symptoms. According to Ganbius, the juice of a citron applied to the skin of one of his acquaintances produced violent rigors.
