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Published on: October 6, 2018
Delusional infestation versus Morgellons disease
Sara A Hylwa1, Sanna D Ronkainen2
1Departments of Dermatology, Hennepin County Medical Center, Minneapolis, Minnesota, USA; University of Minnesota Medical School, Minneapolis, Minnesota, USA.
Abstract:
Delusional infestation is the conviction that one is infested with pathogens-either animate or inanimate-despite medical or microbiologic evidence to the contrary. Infestation with inanimate pathogens, specifically fibers or filaments, has been controversially termed Morgellons disease by the patients themselves, who believe that this is not a psychiatric disease but rather a new organic condition or a skin manifestation of an infection, such as Lyme disease. A large-scale study by the Centers of Disease Control and Prevention on patients presenting with Morgellons clinical manifestations did not find evidence of fibers in the skin nor an association with any infection, including Lyme disease. Once the diagnosis of delusional infestation is made, the cornerstone of treatment is antipsychotics, although this is often quite challenging, as patients are reluctant to take these medications.
Insights
Delusional infestation, including Morgellons disease, lacks evidence of external pathogens or infections. Treatment primarily involves antipsychotics, though patient adherence can be difficult.
Area of Science:
- Psychiatry
- Dermatology
- Infectious Diseases
Background:
- Delusional infestation involves a false belief of being infested with pathogens.
- Morgellons disease, a subset of delusional infestation, is characterized by perceived infestation with fibers or filaments.
- Patients often reject psychiatric explanations, suspecting organic conditions or infections like Lyme disease.
Purpose of the Study:
- To investigate the scientific basis of Morgellons disease and associated symptoms.
- To determine the presence of pathogens or infections in patients with Morgellons manifestations.
- To inform diagnostic and treatment approaches for delusional infestation.
Main Methods:
- A large-scale study was conducted by the Centers for Disease Control and Prevention (CDC).
- Patients presenting with Morgellons clinical manifestations were examined.
- Microbiologic and clinical evidence was assessed to identify pathogens or infections.
Main Results:
- The study found no evidence of fibers within the skin of patients.
- No association was found between Morgellons manifestations and any infection, including Lyme disease.
- Findings support the classification of Morgellons as a form of delusional infestation.
Conclusions:
- Delusional infestation, including Morgellons disease, is not supported by evidence of external pathogens or infections.
- Antipsychotic medication is the primary treatment for delusional infestation.
- Challenges in patient adherence to antipsychotic treatment require further attention.
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