Itraconazole 100 mg is an antifungal medication primarily used to treat a variety of fungal infections. Here are some common uses: Aspergillosis: A fungal infection affecting the lungs and sinuses. Histoplasmosis: An infection caused by the Histoplasma fungus, often affecting the lungs. Blastomycosis: A fungal infection that can affect the lungs and skin. Onychomycosis: Fungal infections of the nails. Coccidioidomycosis: Also known as Valley Fever, caused by Coccidioides fungi. Fungal skin and ringworm infections. It's important to use itraconazole under medical supervision, as the dosage and duration depend on the specific condition being treated. Also, it has potential interactions with other medications and may not be suitable for everyone, especially those with certain health conditions like liver disease.