Itraconazole belongs to the antifungal class of drugs and can be chosen orally for superficial fungal diseases, such as ringworm, ringworm, sweat patches, skin or mucosal candidiasis, where topical application is not effective. In addition, itraconazole can be chosen for impact therapy for nail fungal diseases. Besides, itraconazole can be chosen for the treatment of deep fungal diseases, such as sporotrichosis, systemic Candida infections, and invasive Aspergillus infections. It is also associated with adverse reactions, such as gastrointestinal reactions, damage to liver or kidney function, and transient elevation of liver enzymes, which are common adverse reactions to itraconazole. Elevated liver enzymes may resolve spontaneously after discontinuation of the drug. Rare adverse reactions can also include hypertension, hypokalemia, edema, and pain. Therefore, patients need to be given the appropriate amount of regular treatment under the guidance of their doctor.