You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is A 24 year old unmarried woman has multiple nodular,cystic,pustular and shoulders for 2 years. The drug of choice for her treatment would be - and explain in detail?
Retinoids are comedolytic and anti inflammatory. They act by restoring the altered follicular keratinisation. Isotretinoin is a systemic retinoid highly effective in the Rx of severe, recalcitrant acne vulgaris Grade 1 acne - comedones, occasional papules Grade 2 acne - papules, comedones, few pustules Grade 3 acne - predominant pustules, nodules, abscesses Grade 4 acne- mainly pseudocysts, abscesses, widespread scarring Rx Grade 1- topical retinoids Grade 2 - depending on the type of predominant lesions present, combined use of topical benzyl peroxidase, retinoids, and antibacterials Grade 3- oral antibiotics Grade 4- oral retinoids according to history patient is suffering from grade 4 acne- drug of choice for nodulocystic grade 4 acne is isoteinoin. Reference Harrison20th edition pg 1209