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agoraphobia: agoraphobia: [19] Agoraphobia – fear of open spaces or, more generally, of simply being out of doors – is first referred to in an 1873 issue of the Journal of Mental Science; this attributes the term to Dr C Westphal, and gives his definition of it as ‘the fear of squares or open places’. This would be literally true, since the first element in the word represents Greek agorá ‘open space, typically a market place, used for public assemblies’ (the most celebrated in the ancient world was the Agora in Athens, rivalled only by the Forum in Rome).

The word agorá came from ageirein ‘assemble’, which is related to Latin grex ‘flock’, the source of English gregarious. Agoraphobia was not the first of the -phobias. That honour goes to hydrophobia in the mid 16th century. But that was an isolated example, and the surge of compounds based on Greek phóbos ‘fear’ really starts in the 19th century.

At first it was used for symptoms of physical illness (photophobia ‘abnormal sensitivity to light’ 1799), for aversions to other nationalities (Gallophobia 1803; the synonymous Francophobia does not appear until 1887), and for facetious formations (dustophobia, Robert Southey, 1824), and the range of specialized psychological terms familiar today does not begin to appear until the last quarter of the century (CLAUSTROPHOBIA 1879, acrophobia ‘fear of heights’ from Greek akros ‘topmost’ – see ACROBAT – 1892).
=> aggregate, allegory, gregarious, segregate
cholera: cholera: [14] Greek kholéra originally meant ‘illness caused by choler, bilious attack’; it was a derivative of kholé ‘bile’ (which is related to English gall). Passing into Latin as cholera, it began to be used for ‘bile’ itself, both in the physiological sense and as representing one of the four ancient humours, ‘anger’. It had that sense when first adopted into English, and into French, where it became colère (source of English choler [14]).

It was revived as a term for a severe digestive disorder, involving vomiting, diarrhoea, etc, in the 17th century, and in the 19th century was applied (from the similarity of the symptoms) to the often fatal infectious disease caused by the bacterium Vibrio comma.
=> gall, melancholy
diabetes: diabetes: [16] Diabetes means literally ‘passing through’; it was originally so named in Greek because one of the symptoms of the disease is excessive discharge of urine. Greek diabétēs was a derivative of diabaínein ‘pass through’, a compound verb formed from the prefix dia- ‘through’ and baínein ‘go’ (a relative of English basis and come). English acquired it via medieval Latin diabētēs. Compare DIARRHOEA.
=> basis, come
tarantella: tarantella: [18] In the 15th century in southern Italy an epidemic of a curious nervous disorder broke out, one of whose symptoms was an uncontrollable compulsion to whirl and cavort around, as if dancing. The people attributed it to the bite of a spider, the tarantula [16], named after the local town and seaport of Taranto. In due course the dancing came to be rationalized as a method of counteracting the effects of the spider’s bite, and it was named tarantella, a diminutive form of Taranto. The word finally came to stand for a particular type of dance.
allopathy (n.): 1842, "treatment of disease by remedies that produce effects opposite to the symptoms," from German Allopathie (Hahnemann), from Greek allos "other" (see alias (adv.)) + -patheia, "suffering, disease, feeling" (see -pathy). The term applied by homeopathists to traditional medicine.
apoplectic (adj.): 1610s, "involving apoplexy," from French apoplectique (16c.), from Latin apoplecticus, from Greek apoplektikos "disabled by a stroke, crippled, struck dumb," from apoplektos, verbal adjective of apoplessein (see apoplexy). Meaning "showing symptoms of apoplexy" (1721) gradually shaded into "enraged, very angry."
asymptomatic (adj.): "without symptoms," 1856, from a-, privative prefix, + symptomatic.
cold (n.): c. 1300, "coldness," from cold (adj.). Sense in common cold is 1530s, from symptoms resembling those of exposure to cold; compare earlier senses "indisposition caused by exposure to cold" (early 14c.); "discomfort caused by cold" (c. 1300).
erogenous (adj.): "inducing erotic sensation or sexual desire," 1889, from Greek eros "sexual love" (see Eros) + -genous "producing." A slightly earlier variant was erogenic (1887), from French érogénique. Both, as OED laments, are improperly formed. Erogenous zone attested by 1905.
In this connection reference may be made to the well-known fact that in some hysterical subjects there are so-called "erogenous zones" simple pressure on which suffices to evoke the complete orgasm. There is, perhaps, some significance, from our present point of view, in the fact that, as emphasized by Savill ("Hysterical Skin Symptoms," Lancet, January 30 1904) the skin is one of the very best places to study hysteria. [Havelock Ellis, "Studies in the Psychology of Sex," 1914]
feverish (adj.): late 14c., "causing fever;" 1630s, "excited, unduly ardent;" 1640s, "having symptoms of fever, having a slight fever," from fever + -ish. Earlier in same sense was feverous (late 14c.). Old English had feferig, feferseoc. Related: Feverishly; feverishness.
hectic (adj.): late 14c., etik (in fever etik), from Old French etique "consumptive," from Late Latin hecticus, from Greek hektikos "continuous, habitual, consumptive" (of a disease, because of the constant fever), from hexis "a habit (of mind or body)," from ekhein "have, hold, continue" (see scheme).

The Latin -h- was restored in English 16c. Sense of "feverishly exciting, full of disorganized activity" first recorded 1904, but hectic also was used in Middle English as a noun meaning "feverish desire, consuming passion" (early 15c.). Hectic fevers are characterized by rapid pulse, among other symptoms. Related: Hecticness.
nostalgia (n.): 1770, "severe homesickness considered as a disease," Modern Latin, coined 1668 in a dissertation on the topic at the University of Basel by scholar Johannes Hofer (1669-1752) as a rendering of German heimweh (for which see home + woe). From Greek algos "pain, grief, distress" (see -algia) + nostos "homecoming," from PIE *nes- "to return safely home" (cognate with Old Norse nest "food for a journey," Sanskrit nasate "approaches, joins," German genesen "to recover," Gothic ganisan "to heal," Old English genesen "to recover"). French nostalgie is in French army medical manuals by 1754.

Originally in reference to the Swiss and said to be peculiar to them and often fatal, whether by its own action or in combination with wounds or disease. By 1830s the word was used of any intense homesickness: that of sailors, convicts, African slaves. "The bagpipes produced the same effects sometimes in the Scotch regiments while serving abroad" [Penny Magazine," Nov. 14, 1840]. It is listed among the "endemic diseases" in the "Cyclopaedia of Practical Medicine" [London, 1833, edited by three M.D.s], which defines it as "The concourse of depressing symptoms which sometimes arise in persons who are absent from their native country, when they are seized with a longing desire of returning to their home and friends and the scenes their youth ...." It was a military medical diagnosis principally, and was considered a serious medical problem by the North in the American Civil War:
In the first two years of the war, there were reported 2588 cases of nostalgia, and 13 deaths from this cause. These numbers scarcely express the real extent to which nostalgia influenced the sickness and mortality of the army. To the depressing influence of home-sickness must be attributed the fatal result in many cases which might otherwise have terminated favorably. ["Sanitary Memoirs of the War," U.S. Sanitary Commission, N.Y.: 1867]
Transferred sense (the main modern one) of "wistful yearning for the past" first recorded 1920, perhaps from such use of nostalgie in French literature. The longing for a distant place also necessarily involves a separation in time.
semiology (n.): 1690s, "sign language," from Greek semeion "a sign, mark, token," from sema (compare semiotic) + -ology. As "branch of medical science concerned with symptoms," 1839; as "logical theory of signs" from 1923. Related: Semiological.
semiotic (adj.): 1620s, "of symptoms, relating to signs of diseases," from Greek semeiotikos "significant," also "observant of signs," adjective form of semeiosis "indication," from semeioun "to signal, to interpret a sign," from semeion "a sign, mark, token," from sema "sign" (see semantic). Its use in psychology dates to 1923. Related: Semiotical (1580s).
sniffle (v.): 1819, frequentative form of sniff (v.). Related: Sniffled; sniffling. The sniffles "runny nose, head cold" is recorded from 1825. Sniffly (1897) tends to refer to physical symptoms, while sniffy (1858) means "scornful, disdainful and disagreeable." Snuffy "annoyed" is from 1670s.
symptomatology (n.): study of symptoms, 1737, from medical Latin symptomatologia, from symptomat-, stem of symptoma (see symptom) + -logia (see -logy). Related: Symptomatological.
syndrome (n.): "a number of symptoms occurring together," 1540s, from medical Latin, from Greek syndrome "concurrence of symptoms, concourse of people," from syndromos "place where several roads meet," literally "a running together," from syn- "with" (see syn-) + dromos "a running, course" (see dromedary). Psychological sense is from 1955.
acrodynia: "A disorder characterized by swelling and pain or paraesthesia of the hands and feet, with gastrointestinal and various other symptoms, probably resulting from mercury poisoning but originally also attributed to ergotism or arsenic poisoning; (in later use) specifically = pink disease", Mid 19th cent. After French acrodynie.