Affected by chilblains; having painful inflammatory blisters from cold exposure.
Past participle of 'chilblain' used as an adjective, with the -ed suffix indicating a state or condition, following standard English pattern for creating adjectives from nouns.
Historical diaries and medical records show that chilblained fingers and toes were common enough to be casually mentioned in letters—it was treated as an ordinary winter hazard, like how we now mention dry skin or chapped lips.
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