Keratoderma blennorrhagica. This image shows in detail the morphology of cutaneous lesions associated with certain systemic inflammatory processes. Keratoderma blennorrhagica is the most distinctive skin manifestation of reactive arthritis, presenting as vesiculopustular papules that eventually become hyperkeratotic. In this representation, we can observe how the lesions tend to cluster and form crusty plaques of a yellowish or brown color. Likewise, in the graphic, one can appreciate the thickening and hardening of the skin characteristic of this pathology. Generally, these alterations are localized precisely on the palms and soles of the feet. It is fundamental to highlight that this condition reflects an abnormal immune response following a previous infection.
The formation of these lesions is primarily due to the excessive formation of keratin in the superficial layers of the epidermis. This means that cell turnover accelerates drastically in the areas affected by inflammation. In addition, areas subjected to greater mechanical friction usually present more severe and evident symptoms. Consequently, patients experience a notable loss of skin elasticity, which can lead to painful fissures. However, the severity of keratoderma blennorrhagica can vary significantly among diagnosed individuals. Therefore, a thorough clinical evaluation is necessary to classify the degree of cutaneous involvement present in each specific case.
Regarding clinical management, comprehensive care is crucial to effectively manage both cutaneous and articular manifestations. This is because reactive arthritis not only affects the dermis but also compromises the patient’s mobility. For example, treatment usually combines topical keratolytic agents with systemic anti-inflammatory drugs. Furthermore, controlling the underlying infection is a determining step to stop the progression of the disease. Thus, the multidisciplinary approach allows for a faster recovery of skin integrity. Finally, long-term follow-up prevents the frequent recurrences that characterize this clinical picture. Similarly, patient education regarding the care of the soles of the feet is essential for success.