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Medical Glossary - D

  • de quervain's stenosing tenovaginitis
    This is a type of tenosynovitis of the tendons of the muscles of the thumb as they pass into the wrist. The pain is over the styloid process of the radius and there is a palpable nodule in the course of the abductor pollicus longus and extensor poilicus brevis tendons. This is a similar condition to trigger finger. The cause is unknown but is often associated with repetitive activities involving much use of the thumb and forefinger and wrists such as wringing clothes, working at machines or on assembly lines.

  • disablement benefit
    Disablement Benefit can be paid by the DSS to those people suffering from industrial disease as pre- scribed by the Industrial Injuries Advisory Council.

  • dupuytren's contracture
    This is a condition characterised by a flexion contracture of one or more of the fingers due to thickening and shortening of the palmar aponeurosis (thin fibrous sheet of tissue on the palm of the hand). The flexion is much more common in men than in women and often both hands are affected. The other sign is a small, thickened module in the mid palm opposite the base of the ring finger. The area thickened gradually spreads from this point giving rise eventually to firm cord like bands that extend into the ring or little finger preventing full extension of the metacarpal-phalangeal, and the proximal inter-phalangeal joints. The flexion deformity becomes progressively worse over the course of months or years and surgery may be necessary.

  • dysaethesia
    Insensitivity or derangement of sensation or the senses.

  • dysarthrosis
    Deformity or malformation of a joint.

  • dyschiria
    Derangement of the power to tell which arm (or other part of the body) has been touched.

  • dyscrasia
    A term formerly used to indicate an abnormal mixture of the four humours but in modern usage is roughly synonymous with 'disease' or 'pathologic condition'

  • dyskinesia
    Distortion or impairment of voluntary movements as in spasm or tic.

  • dysphoria
    A state of unpleasant mood alternation - which can be drug induced.

  • dysthymic
    Depressed in spirits or dejected.

  • dystonic phenomena
    These may manifest itself as poor coordination, cramps, fatigue on repetitive movements and loss of fine movements. There may be motor weakness but no significant muscle wasting.

  • dystrophy
    Disorders arising from genetic abnormalities or faulty nutrition and affecting muscle groups, i.e. the muscular dystrophics.