Y40-Y59: Drugs, medicaments and biological substances causing adverse effects in therapeutic use

Y56: Topical agents primarily affecting skin and mucous membrane and ophthalmological, otorhinolaryngological and dental drugs

Topical agents primarily affecting skin and mucous membrane and ophthalmological, otorhinolaryngological and dental drugs are a group of medications applied directly to the body's surfaces to treat a range of illnesses. Specifically, these medications are typically formulated to deal with disorders affecting the skin, eyes, ears, nose, throat, and teeth. This drug category overwhelmingly impacts the skin and the mucous membrane, the body's natural barrier to bacteria and other harmful microorganisms. Agents can include antibacterial creams, eye drops, nasal sprays, and dental medications. Symptoms may range from mild discomfort or rash to inflammation, soreness, and infection, depending on effective doses. Disease progression mainly depends on the underlying condition the drug is meant to treat, while misapplication, overdose, or unintended side effects may exacerbate symptoms. These medications do not typically transmit diseases but can cause adverse reactions, particularly if used incorrectly or in individuals with certain sensitivities or allergies.