08/01/2026
Geen teennagels, maar vingernagels.
Sommige aandoeningen kunnen ook bij de tenen voorkomen.
❇️ Common Nail Signs & Disorders:
* Beau’s Lines – Transverse depressions across the nail plate caused by temporary interruption of nail growth (illness, chemotherapy, severe infections).
* Onycholysis – Separation of the nail plate from the nail bed; seen in trauma, psoriasis, hyperthyroidism, fungal infections.
* Onychorrhexis – Longitudinal ridges due to brittle nails; associated with aging, nutritional deficiencies, and eczema.
* Onychomadesis – Complete nail shedding from the proximal end; occurs after systemic illness, hand-foot-mouth disease, trauma.
* Onychoschizia – Lamellar splitting or peeling of the nail plate, often from repeated wetting, chemicals, or iron deficiency.
* Trachyonychia – Rough, brittle, sandpaper-like nails; seen in alopecia areata, eczema, and lichen planus.
* Pitting in Psoriasis – Shallow depressions on the nail surface caused by defective keratinization in psoriasis.
* Pitting in Alopecia Areata – Fine, regular pits due to autoimmune damage to nail matrix.
* Lichen Planus – Thinning and ridging of the nail plate, sometimes causing scarring.
* Darier Disease – Red and white longitudinal streaks with V-shaped nicks at the free edge.
* True Leukonychia – Complete whitening of the nail plate due to abnormal keratinization.
* Leukonychia – White discoloration from nail plate or nail bed changes (trauma, systemic illness).
* Apparent Leukonychia – Whitening of nail bed that disappears with pressure (e.g., Terry’s nails).
* Clubbing – Bulbous enlargement of fingertips and increased nail curvature; linked to lung disease, heart disease, inflammatory bowel disease.
* Brachyonychia – Short, broad nails; may be congenital or linked to hyperparathyroidism.
* Onychogryphosis – Thickened, curved, “ram’s horn” nails, often from neglect, trauma, or vascular disease.
* Dorsal Pterygium – Scarring causing the skin to grow over the nail from the top; seen in lichen planus.
* Ventral Pterygium – Adhesion between nail plate and hyponychium; seen in connective tissue disorders.
* Splinter Hemorrhages – Thin, red-brown streaks under the nail; associated with trauma, infective endocarditis, vasculitis.
