Differential Diagnosis for Burning Lips in the Summer

Single Most Likely Diagnosis

• Sunburn: This is the most common cause of burning lips during the summer, especially if the individual has been exposed to the sun without adequate lip protection. The UV rays can cause damage to the skin on the lips, leading to a burning sensation.

Other Likely Diagnoses

• Dryness and Chapping: Summer weather, especially when combined with air conditioning or dry air, can dry out the lips, leading to chapping and a burning sensation.
• Allergic Reactions: Some individuals may experience an allergic reaction to certain ingredients in lip products, foods, or environmental factors, which can cause burning lips.
• Viral Infections: Herpes simplex virus (cold sores) can cause burning lips, especially during the summer when UV exposure can trigger outbreaks.
• Nutritional Deficiencies: Deficiencies in vitamins like B12 or iron can cause oral symptoms, including burning lips.

Do Not Miss Diagnoses

• Lip Cancer: Although less common, it's crucial to consider lip cancer, especially in individuals with a history of prolonged sun exposure or tobacco use. Early detection is key to effective treatment.
• Autoimmune Disorders: Conditions like lupus or Sjögren's syndrome can cause oral symptoms, including burning lips, and require prompt medical attention.

Rare Diagnoses

• Erythromelalgia: A rare disorder characterized by burning pain, heat, and redness in the hands and feet, but can also affect the lips.
• Glossodynia: A condition characterized by a burning sensation in the tongue, but can sometimes affect the lips as well.
• Neuropathic Disorders: Certain neuropathic conditions can cause abnormal sensations, including burning, in the lips.