Acne rodens is a medical term used to describe a rare and chronic skin condition known as tuberculid of the skin. It is characterized by the presence of multiple small, reddish-brown papules on the skin, which resemble acne lesions. The condition typically affects the face, neck, and upper chest areas, but it can also occur on other parts of the body.
The exact cause of acne rodens is unknown, but it is believed to be an immunologic reaction to the bacteria Mycobacterium tuberculosis or other mycobacterial species. It is not a contagious condition and does not stem from poor hygiene or uncleanliness.
Acne rodens typically presents with persistent or recurrent crops of small, firm papules that may be slightly itchy or tender. The lesions may form pustules or heal with a depressed scar-like appearance. In some cases, there may be associated systemic symptoms such as fever, malaise, and night sweats.
The diagnosis of acne rodens is made based on clinical presentation, characteristic skin lesions, and may be confirmed by performing a skin biopsy. Treatment options for acne rodens include topical or systemic antibiotics, oral corticosteroids, and other immunomodulatory medications. However, the response to treatment can vary from person to person, and the condition may relapse or persist despite treatment.
In summary, acne rodens is a rare skin condition characterized by the presence of small papules resembling acne lesions. It is believed to be an immunologic reaction to mycobacteria, and treatment options aim to control the symptoms and prevent relapse.
