Ask Dr Miriam

QI went to the doctor because I was tired all the time, my nails were splitting and my hair was going grey. I’ve been told I have pernicious anaemia. What is it?

Well, you’re actually lucky, quite often pernicious anaemia is missed because the symptoms come on gradually.

It’s an autoimmune disorder, meaning your body is attacking itself, affecting the lining of the stomach and this causes poor absorption of vitamin B12 from your diet.

The anaemia of pernicious anaemia is actually caused by

B12 deficiency, B12 being necessary for red blood cells and the protective sheath of nerves.

You may have noticed you have pins and needles in your fingers and toes, you’re getting clumsy and your memory is suffering. There are many tests your doctor can do to assess your anaemia and once it’s confirmed you can be promptly treated with vitamin B12, given by injection once a month. This will usually cure the anaemia and many other symptoms. You’re going to need B12 injections for the rest of your life though.