D folliculorum (all stages) is found in small hair follicles and eyelash hair follicles. In all forms, immature and adult, it consumes epithelial cells, produces follicular distention and hyperplasia, and increases keratinization leading (in eyelashes) to cuffing, which consists of keratin and lipid moieties. Demodex brevis (all stages) is present in the eyelash sebaceous glands, small hair sebaceous glands, and lobules of the meibomian glands.
Phthiriasis palpebrarum can be easily diagnosed by close examination of the eyelashes and eyelid margins at the slit lamp and can be managed mechanically. Parasitological examination of the eyelashes can confirm the diagnosis.
At Mayo Clinic, researchers are trying their best to find out the cure for phthiriasis.
22% of hospital consultant episodes are of phthiriasis.