Macula

Fovea Centralis | Definition, Structure & Function

Vascular inflammatory macules in 3D: understanding skin responses to inflammation Vascular inflammatory macules are primary skin lesions that appear when small blood vessels dilate in response to inflammation, leading to flat, red discolorations on the skin. These lesions are non-palpable and typically fade under diascopy, indicating that blood is still within the vessels rather than leaked into surrounding tissue. 📏 Size matters in diagnosis: 🔻 Macules under 1 cm are classified as roseola. 🔻

What are vascular non-inflammatory macules? 3D skin lesions visualized Vascular non-inflammatory macules are primary skin lesions caused by dilation of dermal blood vessels—either temporary or permanent—without any signs of inflammation. What makes them unique❓ They do not disappear under pressure (a key diagnostic feature seen during diascopy), as blood remains within the dilated vessels rather than being displaced. These macules can appear on both skin and mucous membranes, and may present as:

Understanding Macular Degeneration