Final answer:
Various factors beyond viral infections can cause folliculitis, including sweat, skin injuries, ingrown hairs, tight clothing, shaving irritation, bacterial infections like Staphylococcus aureus and Pseudomonas aeruginosa, and acne. Bacterial diseases such as cutaneous anthrax and lymphogranuloma venereum also contribute to hair follicle inflammation.
Step-by-step explanation:
Besides a viral infection, several other factors can cause folliculitis. Sweat, skin injuries, ingrown hairs, tight clothing, shaving irritation, and certain skin conditions can all contribute to the inflammation of hair follicles.
Furthermore, bacterial infections such as Staphylococcus aureus and Pseudomonas aeruginosa, which can be associated with the hot tub rash, are common culprits.
Additionally, conditions such as acne involve inflammation of hair follicles when they become clogged with sebum and dead skin cells, creating a breeding ground for Propionibacterium acnes.
Lastly, diseases like cutaneous anthrax, caused by Bacillus spp., and lymphogranuloma venereum, caused by certain serovars of C. trachomatis, can also affect the lymphatic system and hair follicles.