While topical 5-FU is a widely used and cost-effective treatment for AKs and is generally well tolerated, its potential side-effects can include: pain, crusting, redness, and local swelling. These adverse effects can be mitigated or minimized by reducing the frequency of application or taking breaks between uses. The most commonly used application regimen consists of applying a layer of topical cream to the lesion twice a day after washing; duration of treatment is typically 2–4 weeks to thinner skin like the cheeks and up to 8 weeks for the arms; treatment of up to 8 weeks has demonstrated a higher cure rate. Imiquimod cream
Imiquimod is a topical immune-enhancing agent licensed for the treatment of genital warts. Imiquimod stimulates the immune system through the release and up-regulation of cytokines. Treatment with Imiquimod cream applied 2–3 times per week for 12 to 16 weeks was found to result in complete resolution of AKs in 50% of people, compared to 5% of controls.
This is a significant problem, as it can cause weight loss of 55 to 75 pounds per animal. Some species of lice infesting cattle include the cattle biting louse (Bovicola bovis), the shortnosed cattle louse (Haematopinus eurysternus), the longnosed cattle louse (Linognathus vituli), and the little blue cattle louse (Solenopotes capillatus). Treatment
Cattle infested with bovine pediculosis are generally treated chemically, by drugs like ivermectin and cypermethrin. History
In the 15th century, topical mercury treatment was used to treat pediculosis. See also
Nitpicking

References
External links

Head louse infestations: Biology, prevention and control  by Prof. Kosta Y. Mumcuoglu
Head lice: Biology and Management at IdentifyUS LLC
National Pediculosis Association
Frankowski BL, Weiner LB (September 2002). "Head lice". Pediatrics. 110 (3): 638–643. doi:10.1542/peds.110.3.638. PMID 12205271. S2CID 245074002. Archived from the original on 2008-10-13. Retrieved 2004-07-12. Morewitz H (2005). "A Brief History of Head Lice". Speare R (2007). "Head Lice Information Sheet". James Cook University, N. Queensland, Australia. Archived from the original on 2014-05-29. Pediculus humanus Head Lice Infestation: Symptoms, Causes & Diagnosis