**Question:** Lead poisoning is characterised by -

a) Eosinophilic stippling of WBC
b) Normochromic normocytic anaemia
c) Hypochromic normocytic anaemia
d) ↓Fe2+
e) Microcytic anaemia

**Correct Answer:**

**Core Concept:** Lead poisoning is a condition caused by excessive exposure to lead, which is a toxic heavy المعدن. Lead can interfere with various physiological processes, primarily affecting bone marrow, red blood cells, and the central nervous system.

**Why the Correct Answer is Right:**

The correct answer, "Hypochromic normocytic anaemia" (option C), represents the primary clinical manifestation of lead poisoning. Lead poisoning affects the production of red blood cells (RBCs) in the bone marrow, causing a decrease in their size and hemoglobin concentration. This leads to a decrease in the oxygen-carrying capacity of the blood, which manifests as hypochromic (decreased hemoglobin) and normocytic (normal red cell size) anemia.

**Why Each Wrong Option is Incorrect:**

a) Eosinophilic stippling of WBC (option A) is a rare phenomenon observed in lead poisoning and not the primary manifestation of the condition. Eosinophilia is an increase in the number of eosinophils, a type of white blood cell, and is not directly related to lead poisoning.

b) Normochromic normocytic anaemia (option B) could be a potential manifestation of lead poisoning, but the correct answer is more specific to the condition. Hypochromic normocytic anemia reflects the decreased hemoglobin concentration and normal red cell size, respectively.

c) Hypochromic normocytic anaemia (option C) is the correct answer, as explained above.

d) Lead poisoning can cause a decrease in the levels of iron (Fe2+) in the body. Iron is an essential element for the production of hemoglobin, and its deficiency results in anemia. However, option D refers to a specific change in iron levels, not the primary manifestation of lead poisoning.

e) Microcytic anemia (option E) is not the primary manifestation of lead poisoning. Lead poisoning primarily affects the production of hemoglobin and RBCs, leading to hypochromic normocytic anemia.

**Clinical Pearl:** Lead poisoning is a preventable cause of anemia, and prompt recognition and management can prevent further damage to the body. Lead poisoning can be prevented by reducing exposure to lead sources, such as using lead-free paints, reducing exposure to lead-contaminated food or water, and avoiding lead-based products.