What causes rippling in fingernails?

Rippling in fingernails, also known as nail ridging or corrugations, can have several causes. Here are some common reasons for rippling fingernails:

1. Genetics: Some people are more likely to have rippling nails due to genetics or heredity. If other members of your family have ridged nails, you may be more prone to them as well.

2. Aging: As people age, their nails may become thinner and more brittle, causing them to ripple or develop ridges.

3. Vitamin and Mineral Deficiencies: A lack of certain vitamins and minerals, such as iron, vitamin B12, or biotin, can lead to nail abnormalities, including rippling.

4. Trauma or Injury: Trauma to the nail, such as nail biting, cuticle picking, or frequent use of harsh chemicals, can cause damage and lead to rippling.

5. Medical Conditions: Certain medical conditions, such as psoriasis, eczema, thyroid disorders, and connective tissue diseases, can cause changes in nail texture, including rippling.

6. Fungal Infections: Fungal infections of the nail, known as onychomycosis, can cause the nail to thicken and develop ridges or bumps.

7. Medication Side Effects: Some medications, such as chemotherapy drugs, certain antibiotics, and anti-malaria drugs, can have side effects that affect the nails, causing them to ripple.

It's important to note that rippling nails are generally not a cause for concern unless they are accompanied by other symptoms or changes in nail appearance. However, if you are experiencing significant nail rippling or have concerns about the health of your nails, it's advisable to consult a dermatologist or a healthcare professional for proper evaluation and treatment. They can determine the underlying cause and provide appropriate recommendations to improve nail health.