Amphotericin B is primarily used to treat which type of infections?

Amphotericin B is an antifungal medication primarily used to treat systemic fungal infections. It interacts with the fungal cell membrane, leading to increased permeability and ultimately cell death. This medication is especially effective against a variety of fungi, including Candida species and Aspergillus species, which can cause serious infections in immunocompromised patients or those with underlying conditions.

While the other infections mentioned are significant medical concerns, Amphotericin B does not play a role in treating autoimmune, viral, or bacterial infections. Instead, each of those categories typically requires specific treatments such as immunosuppressants for autoimmune diseases, antivirals for viral infections, and antibiotics for bacterial infections.