Differential Diagnosis for Infection of Upper Lip and Cupid Bow Area
Single Most Likely Diagnosis
- Angular Cheilitis: This condition is characterized by inflammation of the corners of the mouth, but it can also affect the Cupid's bow area, causing dryness, redness, and discomfort. It's often associated with fungal or bacterial infections.
Other Likely Diagnoses
- Cold Sore (Herpes Simplex Virus): Although typically found on the lower lip, cold sores can occasionally appear on the upper lip, causing redness, dryness, and pain.
- Impetigo: A bacterial infection that can cause redness, dryness, and crusting on the skin, including the upper lip and Cupid's bow area.
- Eczema (Atopic Dermatitis): Can cause dry, red, and itchy skin on the lips and surrounding areas, including the Cupid's bow.
Do Not Miss Diagnoses
- Lupus: Systemic lupus erythematosus can cause a butterfly-shaped rash across the cheeks and nose, which may include the Cupid's bow area. Missing this diagnosis could lead to delayed treatment of a serious autoimmune disease.
- Sarcoidosis: A condition that can cause skin lesions, including on the face, which might be mistaken for a simple infection. It requires prompt diagnosis and treatment to prevent complications.
Rare Diagnoses
- Mycobacterial Infection: Rare infections like tuberculosis or leprosy can cause skin lesions on the face, including the lips and Cupid's bow area, though this would be extremely uncommon.
- Actinic Cheilitis: A precancerous condition caused by prolonged sun exposure, leading to dry, red, and scaly lips. While not typically confined to the Cupid's bow, it's a rare condition that could potentially affect this area.