- Initially, malnutrition may be mild enough to show no symptom or sign.
- Symptoms vary with the specific malnutrition-related disorder. However, some general symptoms of undernutrition include fatigue, dizziness, rapid hair loss, weight loss, decreased immune response, and lack of growth in children.
- Symptoms or signs of overnutrition include overweight or obesity.
- Micronutrient deficiencies manifest in different ways such as scurvy, rickets, sore mouth among others.