Icronutrient deficiency diseases

Lesson 1: Clinical Nutrition

Icronutrient deficiency diseases

These diseases are caused by improper intake of micronutrients that the human body needs in minute amounts so that it can function properly. Although, micronutrients are needed only in small amounts, their deficiency leads to critical health problems. Micronutrients include vitamins and mineral deficiency diseases. Following below is a list of macronutrient and micronutrient deficiency disorders along with clinical signs.

Micronutrient deficiency
Vitamin A
  1. Night Blindness
  2. Bitots spot
  3. Conjuctival Xerosis
  4. Corneal Xerosis
  5. Corneal Ulcer
  6. Keratomalacia
  7. Xerophthalmic fundus
  8. Skin changes like xerosis of skin and follicular hyperkeratosis
Thiamin or
Beri Beri
Vitamin B1
  1. Loss of appetite
  2. Tingling hands and legs
  3. Numbness, aches and pain
  4. Polyneurits
  5. Either odema or emaciation of body tissues
  6. Wernicke’s Korsakoff Syndrome
Riboflavin or
Vitamin B2 deficiency
  1. Glossitis (magenta tongue)
  2. Cheilosis
  3. Angular stomatitis
  4. Nasolabial dyssebacea
  5. Angular blepharitis
  6. Lingual papillae
  7. Scrotal or vulval dermatosis
  8. Eye lesions like corneal vascularisation
  9. Pharyngitis

Niacin deficiency


(The 4 Ds: dermatitis, diarrhea, dementia, and death).

  1. Sunburn
  2. Irritability
  3. Diarrhoea
  4. Dementia
  5. Swollen tongue
  6. Mental confusion
  7. Dermatitis
  8. Insomnia
  9. Weakness
  10. Extreme cases death
Pantothenic acid ( also called pantothenate)
  1. Acne
  2. Paresthesia
  3. Carpal tunnel syndrome
  4. Fatigue
  5. Insomnia
Pyridoxine or vitamin B6
  1. Microcytic anemia
  2. Depression,
  3. Dermatitis, high blood pressure (hypertension), water retention
  4. Elevated levels of homocysteine
  5. Weakened immune system
Last modified: Wednesday, 2 November 2011, 8:36 AM