iceberg disease
n.— «Experts commonly refer to it as an “iceberg” disease. Visible at the tip are individuals whose symptoms include diarrhea, abdominal pain, weight loss and, in children, delayed growth. The rest of the iceberg consists of those with more subtle symptoms, such as bloating or excess gas. Although these may go unrecognized as signs of celiac disease, the damage continues.» —“Celiac disease: an elusive ‘iceberg’” by Leslie Beck Globe and Mail (Toronto, Canada) July 9, 2008. (source: Double-Tongued Dictionary)
Further reading
In English, the tip of the iceberg refers metaphorically to a small visible part of something immense. In Afrikaans, there’s a phrase suggesting the same thing that translates as “the tips of the hippo’s ears.” This is part of a complete episode...
Mary from Flagler Beach, Florida, says when she lived on St. Croix, it was common to describe overindulging in a plentiful meal by saying that everyone ate and drank like knockin’ dog. This Caribbean English expression referring to “abundance” and...