biology

Lymphocytic colitis

Lymphocytic colitis 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 Lymphocytic colitis rather than just read about it. In short: Lymphocytic colitis is a subtype of microscopic colitis, a condition characterized by chronic non-bloody watery diarrhea. Causes No definite cause has been determined.

Key takeaways

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

Reference excerpt

Lymphocytic colitis is a subtype of microscopic colitis, a condition characterized by chronic non-bloody watery diarrhea.

Causes No definite cause has been determined. The peak incidence of lymphocytic colitis is in persons over age 50; the disease affects twice as many women as men. Some reports have implicated long-term usage of NSAIDs, proton pump inhibitors, and selective serotonin reuptake inhibitors, and other drugs. Associations with other autoimmune disorders suggests that overactive immune responses occur.

Diagnosis The colonoscopy is normal but histology of the mucosal biopsy reveals an accumulation of lymphocytes in the colonic epithelium and connective tissue (lamina propria). Collagenous colitis shares this feature but additionally shows a distinctive thickening of the subepithelial collagen table.

Treatment Budesonide, in colonic release preparations, has been shown in randomized controlled trials to be effective in treating this disorder. Over-the-counter antidiarrheal drugs may be effective for some people with lymphocytic colitis. Anti-inflammatory drugs, such as salicylates, mesalazine, and systemic corticosteroids may be prescribed for people who do not respond to other drug treatment. The long-term prognosis for this disease is good with a proportion of people suffering relapses which respond to treatment.

History Lymphocytic colitis was first described in 1989.

See also Colitis Paratuberculosis Latent tuberculosis

References

External links

NIH eMedicine.com

Illustrations

Worked examples

Example 1 — a first encounter with Lymphocytic colitis

Start with the simplest possible case. Write down what Lymphocytic colitis 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 Lymphocytic colitis 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 Lymphocytic colitis 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 Lymphocytic colitis

In research: Lymphocytic colitis 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 Lymphocytic colitis 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: Lymphocytic colitis is common in secondary-school and first-year university syllabi. It links to neighbouring topics Colitis, Inflammatory diseases of the digestive system, Steroid-responsive inflammatory conditions, so understanding it makes those chapters shorter.
In everyday life: Look for Lymphocytic colitis 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 Lymphocytic colitis in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Lymphocytic colitis 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 Lymphocytic colitis out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Lymphocytic colitis in simple terms?

Lymphocytic colitis is a subtype of microscopic colitis, a condition characterized by chronic non-bloody watery diarrhea. Causes No definite cause has been determined.

Why does Lymphocytic colitis 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 Lymphocytic colitis?

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 Lymphocytic colitis.