Papules can arise due to a variety of reasons, including infections, inflammatory conditions, or neoplastic processes. Common causes include:
- Acne: Blocked hair follicles and sebaceous glands lead to inflammation and the formation of papules. - Dermatitis: Allergic reactions or irritants can cause localized skin inflammation. - Psoriasis: An autoimmune disorder characterized by rapid skin cell turnover, leading to thickened, scaly papules. - Warts: Viral infections caused by human papillomavirus (HPV) result in the proliferation of keratinocytes forming papules.
