Sanofi is a healthcare company engaged in the research, development, manufacture, and marketing of therapeutic solutions. It is organized around a Biopharma operating segment that specializes in immunology and inflammation, rare diseases, neurology, oncology, other medicines, and vaccines. It develops treatment for atopic dermatitis, asthma, chronic rhinosinusitis with nasal polyposis, eosinophilic esophagitis, prurigo nodularis, rheumatoid arthritis, etc.