Question

Leprosy is a:

• A. Bacterial disease
• B. Viral disease
• C. Fungal disease
• D. Metazoal disease

Hint:

Leprosy, also known as Hansen's disease, is caused by a bacterial infection, and early diagnosis and treatment with antibiotics can prevent disability.

Answer 1

The Correct Option is A

Leprosy is a bacterial disease caused by the bacterium Mycobacterium leprae. It primarily affects the skin, peripheral nerves, and mucosal surfaces, leading to symptoms such as skin lesions and nerve damage.

Answer 2

The question asks what kind of disease leprosy is. Let's check each category against what actually causes leprosy.

1. Bacterial disease: Leprosy, also called Hansen's disease, is caused by Mycobacterium leprae, an acid-fast bacillus. This bacterium multiplies slowly inside the body's cells, particularly Schwann cells of peripheral nerves and skin macrophages, producing the characteristic skin lesions, loss of sensation, and nerve thickening seen in the disease. Because the causative organism is a bacterium, leprosy is classified as a bacterial disease.
2. Viral disease: No virus is involved in causing leprosy; its cause has been well established as a bacterium since the organism was first identified by G.H. Armauer Hansen in 1873.
3. Fungal disease: Leprosy is not caused by a fungus either; fungal skin infections produce a very different clinical picture (such as ringworm or candidiasis) and are managed with antifungal, not antimycobacterial, therapy.
4. Metazoal disease: Metazoal diseases are caused by multicellular parasites such as worms; leprosy involves no parasitic worm or multicellular organism at any stage.

Since Mycobacterium leprae, a bacterium, is the confirmed causative organism, leprosy is correctly classified by its causative agent as a bacterial disease.

Therefore, the correct answer is Bacterial disease.