what is primary complex in infants?

This is a disease caused by the Tuberculum bacteria. Specifically Tuberculum chancre. Primary complex lesions involve the skin and lymph nodes mainly that of infants and young children . The route of entry of tubercle bacilli is the lung. The common sites involved are the face and extremities associated with regional lymphadenopathy. CLINICAL FEATURES The most common sites involved are the face and extremities. Mucous membrane are involved in about one third of cases. The lesion appears as brownish red papule that becomes later on an indurated nodule or plaque. These lesions take few months to heal while the enlarged lymph glands persist longer and ulcerate . This is often treated with a course of antibiotics. See your pediatrician for details.