Acne is a common inflammatory skin condition that occurs when hair follicles become blocked with dead skin cells and sebum. Bacteria can also accumulate in the follicle, causing pus to form. It can cause redness, spots, pimples, and cysts on the face and other parts of the body. Acne can be triggered by hormonal changes, diet, medication, and stress.
Acne is primarily caused by a combination of excess sebum production, buildup of dead skin cells, and bacterial activity in the hair follicles. Hormonal changes, such as those during puberty, can trigger acne by increasing sebum production. Certain medications, such as corticosteroids and contraceptives, can also cause acne. Genetics may also play a role in the development of acne. Additionally, factors such as stress, diet, and environmental pollutants may contribute to the development of acne.