Which of the following is not an autoimmune disease?
- Psoriasis
- Rheumatoid arthritis
- Alzheimer’s disease
- Vitiligo
Answer
(3) Alzheimer’s disease
Solution
As per NCERT, when the immune system attacks self-cells, it causes autoimmune disease, e.g. rheumatoid arthritis.
Psoriasis (immune attack on skin cells) and vitiligo (immune destruction of melanocytes) are also autoimmune diseases.
Alzheimer’s disease is a degenerative disorder of the brain (loss of neurons, deficiency of acetylcholine); it is not caused by the body attacking self-cells.
∴ Alzheimer’s disease is not an autoimmune disease.
Answer: (3)