What are the potential causes of horizontal red lines under my fingernails?

Horizontal red lines under the fingernails, also known as nail bands, can have several potential causes. According to the provided references, these lines could be related to specific nail conditions or systemic health issues. However, the exact cause can vary, and sometimes these lines appear in individuals without any underlying health problems.

Possible Causes:

• Nail Conditions: Sometimes, horizontal lines or bands may be due to changes in the nail itself. This can include trauma or pressure on the nail.
• Systemic Conditions: In some cases, these lines might be associated with broader health issues. For example, they could be linked to changes in the body that affect nail growth.

It's important to note that while these references provide insights into potential causes, they do not cover every possible reason for horizontal red lines under the nails. If you notice such changes in your nails, it is advisable to seek a medical evaluation to determine the cause and ensure appropriate care.