What skin condition involves the blockage of sebaceous glands and hair follicles?

The condition characterized by the blockage of sebaceous glands and hair follicles is acne. This skin disorder occurs when hair follicles become clogged with oil (sebum) and dead skin cells. The blockage creates an ideal environment for bacteria to thrive, often leading to inflammation, pustules, and the characteristic bumps associated with acne.

In acne, the overproduction of sebum combined with the presence of certain bacteria can lead to the development of whiteheads, blackheads, cysts, and nodules. This condition primarily affects adolescents due to hormonal changes that increase sebum production, but it can persist into adulthood as well.

While conditions like psoriasis, eczema, and dermatitis may involve inflammation of the skin, they do not primarily stem from the blockage of sebaceous glands or hair follicles. Instead, they are associated with different underlying issues related to skin cell turnover, immune response, or irritants, rather than the clogging mechanism that defines acne.