Sakitamiwa Classification
The classification divides disease presentations into five primary stages or types, often denoted by the prefix "Sak-" followed by a subtype letter. While the exact disease parameters vary depending on the organ system, the general framework is consistent:
The ulcer crater is still visible, but the margins become sharper and the diameter of the defect shrinks to about half or two-thirds of the A1 stage. Regenerating epithelium (new skin) starts appearing at the edges. sakitamiwa classification
In clinical research, these stages are sometimes assigned scores to quantify healing progress: : 5–6 points (most active) : 4–5 points : 3–4 points : 2–3 points : 1–2 points : 0–1 points (fully healed) In clinical research, these stages are sometimes assigned
: The white exudate has completely disappeared. The ulcer is replaced by a flat, red, regenerating mucosal scar, often radiating outward in a star-like pattern. In this phase, the ulcer begins to shrink
The Sakitamiwa classification groups congenital cutaneous and soft-tissue anomalies into four actionable categories—vascular malformations, vascular tumors, hamartomas/overgrowth syndromes, and developmental epidermal/dermal defects—emphasizing morphology, natural history, diagnostics, and tailored management to guide clinicians toward appropriate care.
In this phase, the ulcer begins to shrink as new tissue (epithelium) starts to regrow. giresearch.ph H1 (Healing 1):