Illusory parasitosis: Condition where the individual has a true itch but believes (mistakenly) it is caused by an infestation of arthropods.
While some patients may indeed have infestations, others suffer from a psychiatric condition known as delusional parasitosis (DP). In this condition, the individual strongly believes that ectoparasites or internal parasites cause the itch. In neuroses cases of distress such as these, the patient believes he feels parasites crawling under his skin. Intense scratching to the point of injury is common. (Secondary bacterial infection to the skin commonly occurs.)
The clinical laboratory may receive a patient sample containing:
- Small particles
- Dust
- Skin flakes
- Other material (such as small pieces of yarn, string, or other artifacts)
