The challenge of Morgellons disease: A patient with clinicopathologic correlation

Valentina Caputo1, Emanuela Bonoldi1, Antonella Citterio2

  • 1Department of Surgical Pathology, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy.

Insights

Morgellons disease, a rare skin condition with unexplained fibers, is often misdiagnosed. This case study highlights Morgellons disease in the context of delusional infestation, ruling out Lyme disease.

Area of Science:

  • Dermatology
  • Psychiatry
  • Infectious Diseases

Background:

  • Morgellons disease is a poorly understood condition characterized by skin lesions and the presence of fibers.
  • While often considered psychiatric, an infectious cause linked to Lyme disease has been proposed.
  • Histopathological findings are typically nonspecific.

Observation:

  • A case of Morgellons disease in an adult woman with extensive skin ulcerations and scarring is presented.
  • Microscopic examination confirmed the presence of fibers embedded in the skin.
  • The patient reported symptoms consistent with Morgellons disease.

Findings:

  • The patient was diagnosed with Morgellons disease co-occurring with delusional infestation.
  • No evidence of Borrelia burgdorferi infection, the cause of Lyme disease, was detected.
  • Skin biopsies showed fibers but lacked specific diagnostic markers.

Implications:

  • This case underscores the complexity of Morgellons disease diagnosis.
  • It supports the classification of Morgellons disease as a form of delusional infestation in some cases.
  • Further research is needed to elucidate the pathogenesis and optimal treatment for Morgellons disease.