Gbex says: A pimple is a kind of acne, and one of the many results of excess oil clogging the pores. Some of the varieties are pustules or papules.
Pimples can be treated by various acne medications prescribed by a dermatologist, or purchased at a drug store with a wide variety of treatments.
Common over-the-counter medications for pimples are benzoyl peroxide and/or salicylic acid and antibacterial agents such as Triclosan. Both medications can be found in many creams and gels used to treat acne [acne vulgaris] through topical application.
Both medications help skin slough off more easily, which helps to remove bacteria faster. Acne Rosacea is not caused by bacterial infection. It is commonly treated with tretinoin.
A regimen of keeping the affected skin area clean plus the regular application of these topical medications is usually enough to keep acne under control, if not at bay altogether. 1-2% of the population is allergic to benzoyl peroxide treatments.
Severe acne usually indicates the necessity of prescription medication to treat the pimples. Prescription medications used to treat acne and pimples include isotretinoin, which is a retinoid.
Historically, antibiotics such as tetracyclines and erythromycin were prescribed. While they were more effective than topical applications of benzoyl peroxide, the bacteria eventually grew resistant to the antibiotics and the treatments became less and less effective.
Also, antibiotics had more side effects than topical applications, such as stomach cramps and severe discoloration of teeth.