Black lines on nails

I've noticed on some of my toe and fingernails I've got thin black lines. No pain or anything but they're definitely there. I wondered if I'd hit them and caused bruising or bleeding but I don't think I have and it's unlikely I'd have it on my toe and fingernails. 

Does anyone here know what this could be? I'm wondering if it's vitamin related. Maybe I need more dairy in my diet?

If you think it's more serious and might need further investigation then I'll call the doctors but my anxiety is so bad I can hardly leave the house. So doctors are a last resort. If anyone knows what these black lines are your Insight is welcome and thanks:)

Parents
  • Dear community members, please be conscious of community rule number 13 which states 'Users should not provide medical or legal advice to other users. Giving medical or legal advice can have serious consequences, even if you’re trying to help another member. Please suggest they get advice from a professional.'

    Many thanks,

    ChloeMod

Reply
  • Dear community members, please be conscious of community rule number 13 which states 'Users should not provide medical or legal advice to other users. Giving medical or legal advice can have serious consequences, even if you’re trying to help another member. Please suggest they get advice from a professional.'

    Many thanks,

    ChloeMod

Children