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 Acne vulgaris involves- and explain in detail?
Acne vulgaris is a disorder of sebaceous glands. Acne vulgaris is a skin condition that occurs when hair follicles are blocked with dead skin cells, bacteria, and oil (sebum). ... Causes Hormonal changes in pregnancy or from the menstrual cycle. Some medications. Ceain cosmetics and lotions. High humidity and sweating. Polycystic ovary syndrome (PCOS) Ref Harrison20th edition pg 1234