Acne and rosacea are extremely common skin conditions that can have a significant psychological and social impact. Acne is caused by factors like blocked hair follicles, increased sebum production, inflammation, bacteria, and hormones. Rosacea has different clinical forms including papules/pustules and redness/telangiectasias. Both are managed with topical treatments like retinoids, antibiotics, and oral antibiotics/isotretinoin for more severe cases. Patients require long-term treatment to control symptoms.