What is a common treatment for an animal diagnosed with flea infestation?

Flea preventive medications are the standard treatment for animals diagnosed with a flea infestation because they are specifically designed to eliminate fleas and prevent future infestations. These medications can come in various forms such as topical treatments, oral tablets, or collars, and they work by either killing adult fleas or disrupting the life cycle of flea larvae and eggs. By using flea preventive medications, the immediate problem of flea irritation and potential disease transmission is addressed, ensuring the animal can recover from the infestation effectively.

In contrast, antibiotics are used to treat bacterial infections and do not target fleas. Anti-inflammatory drugs might be prescribed to reduce swelling or discomfort but do not address the underlying issue of the flea infestation. Corticosteroids are used to manage inflammation and allergic reactions, which may occur as a secondary issue due to fleas but are not a treatment for the fleas themselves. Thus, flea preventive medications are specifically tailored to combat flea infestations, making them the most appropriate choice for treatment in this scenario.