Skin Biology 9. Analysis of Symptoms, Distinguishing Features and Assignment
Skin Analysis – Skin Manifestations, Distinguishing Features and Germ Layer Affiliation
The following distinguishing features are possible in skin analysis: 1. Discoloration
• white
• brown/black
2. Tissue increase / decrease
• Cell proliferation / growth
• Cell breakdown
3. Water retention
• Vesicles
• Pustules
4. Surface change
• oily
• dry
Each of these manifestations can be clearly assigned to one of the germ layers, and this immediately makes clear in which phase (acute / repair phase) the tissue is located.
• Macula (spot) – Ectoderm Localized color change located at the level of the skin
• Papule (nodule <5mm) – Ectoderm, Nodus (node >5mm) – Old Mesoderm Thickening raised above skin level
• Vesicula (vesicle up to pea size), Bulla (blister over pea size) – Ectoderm Fluid-filled cavity
• Pustule – Old Mesoderm Pus-filled blister
• Wheal – New Mesoderm Transient, raised, edematous elevation above skin level
• Scales – Ectoderm Detachments of horn cells
• Crust – Old Mesoderm Dried secretions
Skin Analysis – Skin Manifestations, Distinguishing Features and Germ Layer Affiliation
The following distinguishing features are possible in skin analysis: 1. Discoloration
• white
• brown/black
2. Tissue proliferation / reduction
• Cell proliferation / growth
• Cell breakdown
3. Water retention
• Vesicles
• Pustules
4. Surface change
• greasy
• dry
Each of these phenomena can be clearly assigned to one of the germ layers, and thus it immediately becomes clear in which phase (acute / repair phase) the tissue is located.
• Macula (spot) – Ectoderm Circumscribed color change located at the level of the skin
• Papule (nodule <5mm) – Ectoderm, Nodus (node >5mm) – Old mesoderm Thickening raised above the skin level
• Vesicle (blister up to pea size), Bulla (blister larger than pea size) – Ectoderm Fluid-filled cavity
• Pustule – Old mesoderm Pus-filled blister
• Wheal – New mesoderm Transient, raised above skin level, edematous elevation
• Scales – Ectoderm Detachments of horn cells
• Crust – Old mesoderm Dried secretions