Theresa is a 50 year old woman with a history of ankylosing spondylitis on methotrexate, and history of Chronic Kidney disease, who presented with a single white line on her finger nails, enquiring about the cause.

Causes of single white lines or band (Beaus Lines)

• Chemo
• Arsenic poisoning
• Kidney failure
• Nutritional deficiency

Reading

1. Murtaghs General Practice Chapter 129 – http://murtagh.mhmedical.com/content.aspx?bookid=1522&sectionid=116046129
2. Murtaghs Practice Tips – Chapter 8 – Nail Problems – http://murtagh.mhmedical.com/content.aspx?bookid=1920&sectionid=143276631

Podcast

1. GP Core Content Podcast Episode 150 – Dermatology | Nails