A 78-Year-Old Woman With Nonpruritic Periorbital Purpura Around Her Eyelids

A 78-year-old woman suffers from seasonal rhinitis and conjunctivitis. For the first time, however, she now notes the striking appearance of painless and nonpruritic periorbital purpura involving areas where she has rubbed her itchy eyelids. The patient denies ingestion of aspirin, other NSAIDs, or anticoagulants. Past medical history discloses a distant episode of left-sided lobular breast cancer (ostensibly cured), chronic low back pain managed by taking narcotic analgesics as needed, and several bouts of mild depression.

Which statement is true regarding her present eye condition?