Vertical ridges such as you seem to have (running from the cuticle to the fingertip) are not necessarily a sign of any disease. Many people have them and they seem to become more prominent as we age. I can vouch for that.
Horizontal lines might be a sign of illness that has caused a slow growth that shows up in the nail (like small rings in trees during a drought). You can ask your doctor if you have a real concern or other symptoms such as chest pain, shortness of breath, etc.
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