Blood vessels

From dermoscopedia

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Description This chapter describes the vascular architecture (blood vessels) as seen in trichoscopy (dermoscopy of hair and scalp)
Author(s) Anna Waskiel Burnat · Lidia Rudnicka
Responsible author Anna Waskiel Burnat→ send e-mail
Status unknown
Status update March 29, 2019
Status by Ralph P. Braun


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Comma vessels Dotted vessels Hairpin vessels Elongated hairpin vessels
C-shaped or slightly curved vessels Tiny, red dots densely aligned next to each other Small, linear looped vessels Elongated, linear looped vessels
Inflammatory scalp diseases (seborrheic dermatitis, psoriasis), healthy persons Healthy persons in the frontal area, eczema Healthy persons in the frontal area Cicatricial alopecia (lichen planopilaris, folliculitis decalvans), T-cell lymphoma


Straight linear vessels Thin arborizing vessels Thick arborizing vessels Capillary blood extravasations
Straight linear vessels Thinner than the average terminal hair arborizing vessels Thicker than the average terminal hair arborizing vessels Round or oval, sharply demarcated, intensely red areas
Pemphigus vulgaris Healthy persons (the occipital and temporal area), seborrheic dermatitis Discoid lupus erythematosus, basal cell carcinoma Active psoriasis


Concentric perifollicular vessels Milky red globules Linear helical vessels Lace-like vessels
Vessels (loops or linear) arranged concentrically around a follicular unit Globules or larger areas of a fuzzy or unfocused milky red color Linear vessels twisted along a central axis Combination of serpentine and looped vessels
Cicatricial alopecia (lichen planopilaris, folliculitis decalvans) T-cell lymphoma, psoriasis Psoriasis, pemphigus, T-cell lymphoma Psoriasis


Glomerular vessels Serpentine vessels Thick root-like vessels Vessel nets
Coiled or twisted vessels Bending, scarcely branching vessels Thick, irregularly banded, linear vessels Interfollicular network of blood vessels
Psoriasis Discoid lupus erythematosus Discoid lupus erythematosus, congenital capillary malformations Healthy persons, after topical corticosteroids