What is a cryptic infestation?
Occasionally a person believes that he or she has lice, even though none can be detected. The problem could be a biting insect or mite that is not present at the time of examination. Insects like mosquitoes, fleas, or bedbugs may bite and then leave. Hair care and laundry products, industrial fibers, an undiagnosed disease, or even anti-louse treatments may be causing itching and irritation.
