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Photophobia

/ˌfoʊtəˈfoʊbiə/noun

Painful sensitivity to light, common in migraine, meningitis and eye inflammation.

The Greek roots

φῶς, φωτός
phôs, phōtós
light
+
φόβος
phóbos
fear, aversion

Literally: aversion to light

The story of the word

This is not a phobia in the psychiatric sense; nobody with photophobia is afraid of a lamp. In medical compounds φόβος regularly means intolerance or shrinking away rather than dread, the same sense a physicist uses when calling a surface hydrophobic. Medical Latin carried the term into English around 1800, and a doctor still treats sudden photophobia with fever as a reason to rule out meningitis fast.

How it travelled
Ancient Greek → Latin → English
First recorded
late 18th century

Same family

photographphotonphosphorusphobiaclaustrophobia

In a sentence

The photophobia hit before the headache did, and she went to lie down in the dark.

He wore sunglasses indoors for a week after the corneal abrasion, out of photophobia rather than affectation.

Built on the same root

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