L70.2

Clinical Causes: The precise cause of acne varioliformis remains unclear. Potential triggers include bacterial infections such as *Staphylococcus aureus*. Possible links to minor skin injuries or trauma. Genetic predisposition may play a role in susceptibility. Environmental factors, such as exposure to harsh chemicals or UV radiation, might contribute. Underlying immune response abnormalities could be involved.

Key Symptoms: Appearance of small, dome-shaped papules that may progress to post-inflammatory scars. Lesions often develop in clusters, primarily on the face, especially around the cheeks, chin, and forehead. Characteristic pitted scars resembling those caused by smallpox, giving the skin a 'miliaris' or millet seed appearance. Lesions may heal with scarring and hyperpigmentation. Occasional occurrence of crusted or encrusted lesions during active phases. In some cases, the condition can be recurrent over years.

Diagnosis Path: Diagnosis is primarily clinical, based on the appearance of the skin lesions and their characteristic scarring pattern. A dermatologist will examine the affected areas and may take skin scrapings or biopsies for laboratory analysis to rule out other conditions. Blood tests are generally not necessary unless an underlying systemic cause is suspected. Differential diagnoses include other forms of folliculitis, infected skin conditions, or other cicatricial (scarring) dermatoses.

Treatment Protocols: Treatment options focus on managing active lesions and minimizing scarring. While there is no definitive cure, therapies may include: - Topical antibiotics to reduce bacterial colonization. - Oral antibiotics for more extensive or persistent cases. - Corticosteroids may be used cautiously to reduce inflammation. - Isotretinoin in resistant or severe cases. - Procedures such as laser therapy, dermabrasion, or chemical peels might help improve skin texture after active lesions resolve. It is important to work with a healthcare professional to develop a personalized treatment plan. Lifestyle modifications, including sun protection and skincare routines, can also aid in skin healing.