Dr Adil Sheraz, a consultant dermatologist in London and British Skin Foundation spokesperson, said: ‘Erythema gyratum repens (the rash) is a rare condition and in up 80 per cent of cases is associated with an internal malignancy such as lung cancer or oesophageal cancer.
‘Internal malignancies and cancers can present as rashes on the skin. The rash itself is a sign of an internal issue and in some cases can be the first indication of cancers.