Pernicious anaemia: self-administration of hydroxocobalamin in the covid-19 crisis.

Mohamed and colleagues explain well the varied presentation and diagnostic difficulties of pernicious anaemia.1 I write as a retired physician, who has had pernicious anaemia for 28 years. The authors repeat the standard guidance that maintenance treatment for patients without neurological symptoms should be 1000 μg hydroxocobalamin every three months; every two months for those with neurological symptoms. Some patients, however, myself included, …