Acne is a common skin condition that causes several types of skin blemishes, each with a distinct appearance and symptoms. There are two main types of acne: non-inflammatory and inflammatory. Non-inflammatory acne is characterized by comedones, which can be open or closed. These comedones are more commonly known as whiteheads and blackheads and are generally referred to as different types of pimples. Inflammatory acne, on the other hand, is characterized by redness, swelling, and pus-filled lesions.

The following are common types of blemishes associated with acne and their commonly-used terms:

• Closed comedones, or whiteheads
• Open comedones, or blackheads
• Pustules, or pimples
• Papules
• Cysts
• Nodules

The treatment of acne depends on the severity of the condition. Mild acne can be treated with topical medications such as benzoyl peroxide, salicylic acid, and antibiotics. Oral medications such as isotretinoin, oral contraceptives, and steroid injections may be used for moderate to severe acne. In addition, there are several ingredients that are effective for acne-prone skin, including benzoyl peroxide, alpha hydroxy acids, sulfur, and tea tree oil.

It is important to note that certain factors can contribute to the development of acne, such as the use of medications, exposure to excess sunlight, and the use of occlusive wear. Therefore, it is recommended to avoid high glycemic index foods and dairy-based products to help manage acne symptoms in some individuals.