Facial erythromelalgia: A rare entity to consider in the differential diagnosis of connective tissue diseases

To the Editor: A 53-year-old man presented to an outside dermatologist with an erythematous facial eruption of 4 years' duration. The eruption was associated with burning and swelling, which the patient reported worsened with sun exposure. These symptoms were debilitating, preventing the patient from working and maintaining daily activities. Initially, the eruption was thought to be rosacea and actinic damage; however, it was unresponsive to standard therapies. Given the refractory nature of the facial erythema and reported photosensitivity, a diagnosis of connective tissue disease (CTD) was considered. Antinuclear, anti-Ro/SSA, and anti-La/SSB