Why does folliculitis cause itching?

The itching associated with folliculitis is primarily caused by an infection of the hair follicles and surrounding tissues by pathogens such as bacteria and fungi, which triggers an inflammatory response. This inflammatory reaction leads to the release of inflammatory mediators, subsequently stimulating the skin's nerve endings and producing a sensation of itchiness. The itching associated with folliculitis may be triggered by the following factors: 1. Pathogen infection: Bacteria (e.g., Staphylococcus aureus) or fungi invade the hair follicles, causing localized inflammatory reactions that result in redness, swelling, pain, and itching. 2. Inflammatory mediators: Inflammatory mediators released during the inflammatory response, such as histamine and prostaglandins, can stimulate sensory nerves in the skin, leading to itching. 3. External irritation: If patients neglect proper skin care during illness, the affected skin areas may be subjected to external irritants (e.g., friction, squeezing), thereby worsening the itching symptoms. 4. Allergic reaction: Some patients may develop allergic reactions to medications or dressings used in the treatment of folliculitis, resulting in localized itching and swelling of the skin.