What is the primary symptom of angular cheilitis?

Angular cheilitis is characterized primarily by cracking or fissures at the corners of the mouth. This condition often results from several factors, including dryness, irritation, or infections, but the most defining symptom is indeed the visible cracking that occurs at the angles of the lips. This can lead to discomfort, especially during activities such as speaking or eating.

While ulceration can occur in severe cases, the hallmark of angular cheilitis is the cracks. Fungal infections may be a contributing factor in some instances, but they aren't the primary symptom. Redness of the gums is not specifically associated with angular cheilitis, making it less relevant to identifying this condition.