Angular cheilitis is relatively common in everyday life, especially prevalent among children. The most common type seen is nutritional angular cheilitis, generally caused by a deficiency in vitamins due to children’s frequent picky eating, loss of appetite, and malnutrition. The symptoms usually manifest as moist whitish areas at both corners of the mouth, accompanied by ulcers and raw sores. In severe cases, it can spread to the inner mucosa and vary in length. Another type of angular cheilitis is streptococcal angular cheilitis, generally caused by infections from streptococci or staphylococci. This type of cheilitis typically results in erosion at the corners of the mouth, present with horizontal lines, and due to the bacterial infection, localized bleeding, crusting, and pus formation may occur. Local cleansing followed by the application of antibiotic ointments can be very effective for treating this condition. A less common type is fungal angular cheilitis, also known as candidal infection angular cheilitis, typically occurring in children when their immunity is compromised. The moist local environment leads to similar damage at the corners of the mouth, along with whitish erosion. It is crucial to maintain hygiene and boost the child's immune system to manage this type of angular cheilitis.