B85-B89: Pediculosis, acariasis and other infestations
B85: Pediculosis and phthiriasis
Pediculosis and phthiriasis are infestations caused by lice, tiny pests that thrive by feeding off human blood. The lice infestation, or pediculosis, typically occurs in three forms: head lice, body lice, and pubic lice. Head lice infestation is common among school children; body lice infestation often occurs due to poor hygiene or overcrowding; and pubic lice, or "crabs", are primarily transmitted through sexual contact. Phthiriasis refers specifically to the pubic lice infestation. Symptoms commonly comprise intense itching due to an allergic reaction to lice saliva, and you might spot tiny insects or their eggs, called nits, in your hair. In rare cases, frequent scratching can lead to bacterial infections. If untreated, these lice infestations may persist and the itching can disrupt sleep or daily activities. They do not lead to severe health problems or disease transmission, despite their discomfort.
Patient Disclaimer
The information provided on this page is for general educational purposes only. It is not intended for self-diagnosis and does not replace professional medical advice. Always consult your doctor or a qualified healthcare provider with any questions or concerns about your health.
If you see an ICD diagnosis code (e.g., on a medical report), be aware that doctors may also include additional indicators to express diagnostic certainty. Only a healthcare professional can interpret these codes accurately in the context of your individual case.
For a complete understanding of your condition and what the diagnosis means for you, please speak directly with your doctor.