atrophoderma of Pasini & Pierini

Epidemiology

• adolescents, young adults

Clinical manifestations

• single or multiple sharply demarcated, hyperpigmented, nonindurated patches
• usually on the back
• lesions may be discrete or confluent
• patches are marked by a slight depression of the skin, with an abrupt edge
• consistency & feel of the affected skin remains normal

* images

Laboratory

• none specific
• for exclusion
  • thyroid autoantibodies
    • anti-thyroid peroxidase Ab
    • anti-thyroglobulin Ab
    • anti-thyrotropin receptor Ab
  • Lyme disease serology (titer)

Management

• no treatment is consistently effective
• some patients respond to topical corticosteroids, antibiotics, or antimalarials

More general terms

• skin disease (dermatologic disorder, dermatopathy, dermatosis)