Fitzpatrick's sign (dimple sign)

System: Skin & Nail Signs · All skin & nail signs

What it is — and how it is elicited

Squeezing the sides of a firm skin nodule makes its surface dimple inward, because the growth is tethered to the skin.

What a positive finding suggests

Associated with dermatofibroma, a common benign skin growth.

◈ Behind the name

Thomas Bernard Fitzpatrick (1919–2003), American dermatologist.

Browse the F 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.