Identifying the Different Word: Anaemia, Scurvy, Diarrhoea, Goitre

In this question, we are given four words: Anaemia, Scurvy, Diarrhoea, and Goitre. Our task is to find the word that is different from the other three based on some common characteristic among the three.

Analyzing Each Word and Its Cause

Let's look at the common causes or nature of each condition:

• Anaemia: This is a condition where the body does not have enough healthy red blood cells. A common cause is a deficiency of iron in the diet, which is needed to make haemoglobin. So, Anaemia can be a deficiency disease.
• Scurvy: This disease is caused by a severe lack of vitamin C (ascorbic acid) in the diet. Vitamin C is essential for various bodily functions, and its deficiency leads to symptoms like bleeding gums and weakness. Scurvy is a classic example of a deficiency disease.
• Diarrhoea: This refers to frequent, loose, or watery bowel movements. Diarrhoea is often caused by infections (like bacteria, viruses, or parasites), food poisoning, or underlying digestive disorders. While malnutrition can worsen outcomes, Diarrhoea itself is typically not a primary deficiency disease like Anaemia or Scurvy.
• Goitre: This is a swelling of the thyroid gland in the neck. The most common cause of goitre worldwide is iodine deficiency in the diet. Iodine is crucial for the thyroid gland to produce hormones. Goitre is a deficiency disease.

Comparing the Causes to Find the Different Word

Based on the analysis above, we can see a pattern:

• Anaemia is often caused by iron deficiency.
• Scurvy is caused by vitamin C deficiency.
• Goitre is caused by iodine deficiency.

These three conditions (Anaemia, Scurvy, Goitre) are commonly linked to specific nutrient deficiencies in the diet. They are considered deficiency diseases.

On the other hand, Diarrhoea is primarily caused by infections or other issues affecting the digestive system, not typically a lack of a specific nutrient. Although severe diarrhoea can lead to malnutrition and dehydration, its initial cause is usually different from a deficiency disease.

Conclusion: The Odd One Out

Therefore, Diarrhoea is the word that is different from the other three. Anaemia, Scurvy, and Goitre are often classified as deficiency diseases caused by a lack of specific nutrients, whereas Diarrhoea is typically caused by infection or digestive upset.

Revision Table: Disease Causes

Additional Information: Deficiency Diseases

Deficiency diseases are health problems caused by a lack of essential vitamins, minerals, or other nutrients in the diet. These nutrients are vital for the body's normal functioning. When the intake of a particular nutrient is insufficient over time, it can lead to specific diseases. Examples include:

• Vitamin A deficiency can cause vision problems (like night blindness).
• Vitamin D deficiency can lead to rickets (in children) or osteomalacia (in adults), affecting bone health.
• Niacin (Vitamin B3) deficiency causes pellagra.

Understanding the causes of different health conditions helps in classifying them and finding patterns, which is a common type of question in verbal reasoning or general knowledge sections.