<unk> , named after Clement<unk> , also known as fourth<unk>  or Filatov-Dukes'<unk>  (after Nil Filatov), is an exanthem. It is distinguished from measles or forms of rubella, though it was considered as a form of viral rash. Although<unk>  identified it as a separate entity, it is thought not to be different from scarlet fever caused by exotoxin-producing Streptococcus pyogenes after Keith Powell proposed equating it with the condition currently known as staphylococcal scalded skin syndrome in 1979. It was never associated with a specific pathogen, and the terminology is no longer in use. However, a mysterious rash of unknown cause in school children often gives rise to the question of whether it could be<unk> .
Dukes' disease
Whipple's disease
Zollinger–Ellison syndrome
Ulcerative colitis
Collagenous colitis
Hereditary diffuse gastric cancer
Dieulafoy's lesion
Hereditary pancreatitis