Which of the following is not an autoimmune disease ?

1. Psoriasis

2. Alzheimer's disease

3. Rheumatoid arthritis

4. Vitiligo

Doubtly Asked 30 Oct 2026 NEET UG 2018 Practice test neet Save WhatsApp Report

1 answer

Best answer

Answer: 2. Alzheimer's disease

In an autoimmune disease the immune system attacks the body's own tissues. Psoriasis, rheumatoid arthritis and vitiligo are all autoimmune.

Alzheimer's disease is a neurodegenerative disorder (amyloid plaques, loss of neurons), not autoimmune. The answer is option 2.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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