biology

Haff disease

Haff disease is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Haff disease rather than just read about it. In short: Haff disease is the development of rhabdomyolysis (swelling and breakdown of skeletal muscle, with a risk of acute kidney failure) within 24 hours of ingesting fish. History The disease was first described in 1924 in the vicinity of Königsberg, Germany (now Kaliningrad, Russia) on the Baltic coast, in people staying around the northern part of the Vistula Lagoon (German: Frisches Haff).

Key takeaways

Haff disease belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Haff disease to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Haff disease from memory before moving on to harder problems.

Reference excerpt

Haff disease is the development of rhabdomyolysis (swelling and breakdown of skeletal muscle, with a risk of acute kidney failure) within 24 hours of ingesting fish.

History The disease was first described in 1924 in the vicinity of Königsberg, Germany (now Kaliningrad, Russia) on the Baltic coast, in people staying around the northern part of the Vistula Lagoon (German: Frisches Haff). Over the subsequent fifteen years, about 1000 cases were reported in people, birds and cats, usually in the summer and fall, and a link was made with the consumption of fish (burbot, eel and pike). Since that time, only occasional reports have appeared of the condition, mostly from the Soviet Union and Germany. In 1997, six cases of Haff disease were reported in California and Missouri, all after the consumption of buffalo fish (Ictiobus cyprinellus). In July and August 2010, dozens of people contracted rhabdomyolysis after eating Procambarus clarkii in Nanjing, China. A month later, the Chinese authorities claimed they had Haff disease. An outbreak was reported in Brooklyn, New York on 18 November 2011, when two household members were stricken by the syndrome after eating buffalo fish. On February 4, 2014, two cases of Haff disease were reported in Cook County, Illinois following the consumption of buffalo fish. A group from Brazil identified a Haff disease outbreak in the State of Bahia that lasted from December 2016 to April 2017, with 67 cases identified. In August 2018, a couple from São Paulo, southeastern Brazil, fell ill and needed semi-intensive hospital care after eating fish of the species known in Portuguese as "arabaiana" or "olho-de-boi" (ox-eye), possibly the southern yellowtail amberjack, Seriola lalandi, which they had bought in the city of Fortaleza, State of Ceará, northeastern Brazil, and, according to them, looked "perfect". The day following their admission to hospital the patients already presented an alteration of their urine, which, according to the woman who fell ill, "was very dark, indeed looked like Coca-Cola". On March 2, 2021, a 31-year-old woman from Recife, Brazil, died from Haff disease after ingesting yellowtail amberjack.

Poison The exact nature of the poison is still unclear. In the U.S. outbreak, the source of the fish was traced by the Centers for Disease Control and Prevention, and studies of other fish from the same sources showed a hexane-soluble (and hence non-polar lipid) substance that induced similar symptoms in mice; other food-borne poisons commonly found in fish could not be detected. It cannot be inactivated by cooking, as all six CDC cases had consumed cooked or fried fish. Palytoxin has been proposed as a disease model. It has also been suggested that the toxin may have thiaminase activity (i.e. it degrades thiamine, also known as vitamin B1).

Symptoms Some of the reported symptoms include:

Muscle pain Light to dark brown-colored urine Nausea Chest pain Vomiting Shortness of breath Profuse sweating Pain to light touch Dry mouth, numbness of thighs or whole body, back pain, and stomach cramps are also reported, but seen less frequently.

References

Secondary sources Jürgen W. Schmidt: Die "Haffkrankheit" in Ostpreussen im Herbst 1932, in: Preussenland - Mitteilungen der Historischen Kommission für Ost- und Westpreussische Landesforschung und aus dem Geheimen Staatsarchiv Preussischer Kulturbesitz Heft 2/2009 (47. Jg.) pp. 57–60

External links

Illustrations

Worked examples

Example 1 — a first encounter with Haff disease

Start with the simplest possible case. Write down what Haff disease claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Haff disease before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Haff disease ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Haff disease

In research: Haff disease appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Haff disease in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Haff disease is common in secondary-school and first-year university syllabi. It links to neighbouring topics Nephrology, Poisons, so understanding it makes those chapters shorter.
In everyday life: Look for Haff disease outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Haff disease in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Haff disease means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Haff disease out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Haff disease in simple terms?

Haff disease is the development of rhabdomyolysis (swelling and breakdown of skeletal muscle, with a risk of acute kidney failure) within 24 hours of ingesting fish. History The disease was first described in 1924 in the vicinity of Königsberg, Germany (now Kaliningrad, Russia) on the Baltic coast…

Why does Haff disease matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Haff disease?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Haff disease.