a syndrome that begins with a D that effects the pinky and ring fingers

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Dupuytren's contracture is a hand deformity that usually develops over years. The condition affects a layer of tissue that lies under the skin of your palm. Knots of tissue form under the skin — eventually creating a thick cord that can pull one or more fingers into a bent position.

More information here:
https://patient.info/health/dupuytrens-contracture-leaflet 

Helena