Mirror-touch synesthesia—described as a kind of supercharged empathy, in which someone feels as though they’re being touched if they witness it happening to someone else—appears to come with a special set of considerations. Some are benign, such as an observed advantage in recognizing facial expressions; others may be burdensome, as in the case of a neurologist who felt intense pressure in his chest when he saw a patient receiving CPR.

(https://www.psychologytoday.com/us/basics/synesthesia)

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This would make for a great character concept.