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Ash-leaf spots
System: Skin & Nail Signs · All skin & nail signs
What it is — and how it is elicited
Oval, pale white patches of skin, shaped like an ash leaf, often present from birth or early childhood and easier to see under ultraviolet (Wood's) light.
What a positive finding suggests
Associated with tuberous sclerosis complex.
Related signs — Skin & Nail Signs
Browse the A section of the A–Z list or return to the Clinical Signs hub.
Please note: This page is an educational reference about clinical examination signs. A clinical sign supports — and never replaces — a full clinical evaluation, examination and appropriate testing. A sign being present does not by itself prove a diagnosis, and an absent sign does not rule one out. If you have symptoms that worry you, see a health professional.