A 55-year-old woman came to the clinic complaining of severe itching on her arms and legs. Although she itched throughout the day, it became intolerable at night, disrupting her sleep. She would sometimes scratch her arms and legs until exhaustion but could find no relief. Being outside in warm and sunny weather aggravated the problem. She had used moisturizers, emollients, and topical corticosteroids, but they only alleviated the itching temporarily. The itching began 10 months earlier, just after she finalized the divorce from her husband of 20 years.
Examination of the skin revealed numerous excoriations with ulcerations and xerosis on the arms and left leg (Figure 1 and 2). The excoriations were located extensively from the dorsum of her left foot to above the knee and bilaterally from the wrist to above the elbow. They also showed signs of infection. The patient admitted they were self-inflicted. The patient’s right leg had been amputated 5 years before after a car accident, and she wore a prosthetic leg. Examination of other areas showed nothing remarkable.
The patient readily admitted to a great deal of psychological distress. She described feeling depressed since her divorce. She has had difficulty securing a full-time job and has high anxiety about being able to pay her rent and bills.
FIGURE 1
Excoriations on the arms…
FIGURE 2
…and the left leg
WHAT IS THE DIAGNOSIS?
WHAT IS THE TREATMENT STRATEGY?