[Nosology of so-called capillaritis ulcers]

Area of Science:

• Vascular Medicine
• Dermatology
• Microcirculation Research

Context:

• The term "capillaritis" originated from ochre dermatitis, but its application to ulcers requires re-evaluation.
• Capillaritic ulcers are understood as a manifestation of microvascular and tissue responses to venous stasis.

Purpose:

• To clarify the pathophysiology and clinical relevance of "capillaritic ulcers" in the context of venous stasis.
• To explore the relationship between venous stasis, microvascular changes, and ulcer formation in the lower limbs.

Summary:

• These ulcers stem from venous stasis, whether primary (varicose veins) or secondary (post-thrombotic syndrome, arteriopathy).
• They involve a complex interplay of capillary closure and anastomotic opening, leading to irrigation imbalances.
• Infrared thermography reveals a characteristic "mosaic" pattern, indicative of these microcirculatory disturbances.

Impact:

• Highlights the role of microvascular dynamics in the pathogenesis of lower limb ulcers.
• Emphasizes the connection between various angiopathic states and the development of stasis ulcers.
• Provides a basis for understanding the circulatory unit's involvement in these specific ulcer types.