Deformed Nails
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Reviewed By:
Yukiko Ueda, MD (Dermatology)
Dr. Ueda graduated from the Niigata University School of Medicine and trained at the University of Tokyo Medical School. She is currently a clinical assistant professor at the Department of Dermatology, Jichi Medical University, and holds several posts in the dermatology departments at Kyoto Prefectural University of Medicine, Komagome Hospital, University of Tokyo, and the Medical Center of Japan Red Cross Society.
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Indentations on nail
Fingernails abnormality (shape)
Abnormal fingernails (shape)
Nail depressions
Abnormalities in nail shape
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Content updated on Jan 4, 2023
About the symptom
Nail shape abnormalities describes a change in the nail shape. These changes may include becoming spoon shaped, curling and exessive curving.
When to see a doctor
Seek professional care if you experience any of the following symptoms
Change in nail shape
Possible causes
- Ingrown toenail
A condition where the corner of a toenail curves and grows into the skin, causing pain and swelling. Risk factors include obesity, small-sized shoes and cutting the nails incorrectly.
- Alopecia areata
An autoimmune disease where the body's immune system attacks its own hair roots. This causes areas of hair loss which are usually patchy and round in shape.
- Candidiasis (oral, hands and feet)
Normal human skin contains bacteria and fungi. Candidiasis happens when the fungus overgrows and invades the skin. Risk factors include warm moist environments, and a weakened immune system.
- Psoriasis (except for pustular psoriasis)
- Pityriasis rubra pilaris
- Paronychia
- Lichen planus (including nails)
- Spoon nails (koilonychia)
- Green nail syndrome
Questions your doctor may ask about this symptom
Your doctor may ask these questions to check for this symptom
Has your nail shape changed?
Do you have nail pain?
Has your nail color changed?
Do you have vertical bleeding or red lines under your nails?
Other Related Symptoms
Similar symptoms or complaints
Symptoms from the same body system / part
Symptoms treated by the same specialty
Reviewed By:
Yukiko Ueda, MD (Dermatology)
Dr. Ueda graduated from the Niigata University School of Medicine and trained at the University of Tokyo Medical School. She is currently a clinical assistant professor at the Department of Dermatology, Jichi Medical University, and holds several posts in the dermatology departments at Kyoto Prefectural University of Medicine, Komagome Hospital, University of Tokyo, and the Medical Center of Japan Red Cross Society.
Just 3 minutes.
Developed by doctors.
Ubie is supervised by 50+ medical experts worldwide
Seiji Kanazawa, MD, PHD
Obstetrics and gynecology (OBGYN)
National Center for Child Health and Development, Japan