Final answer:
Follicular casts are often found in association with folliculitis and acne, which are both inflammatory conditions of the hair follicles.
Step-by-step explanation:
Follicular casts often co-exist with conditions such as folliculitis and acne. Folliculitis is characterized by bumps and pimples that may be itchy, red, and/or pus-filled and can result from various factors such as sweat, skin injuries, ingrown hairs, tight clothing, or irritation from shaving. Proper skin care and hygiene are important for prevention, and medical treatment may include topical antibiotics. Acne is another dermatological condition associated with follicular casts where inflammation occurs due to clogged hair follicles with lipids, fatty acids, and dead skin cells, creating an environment conducive to Propionibacterium acnes bacteria, which contributes to the formation of inflammatory lesions.