1. Haematological Diseases
Iron deficiency, megaloblastic anemia (Vit B12 and folic acid), sickle cell anemia, thalasemia, hereditary acquired anemia, hemophilia.
2. Endocrine system
Diabetes, thyroid diseases, disorders of sex hormones.
3. Nervous system
Epilepsy, Parkinson’s disease, stroke, psychiatric disorders: depression, schizophrenia and Alzheimer’s disease.
4. Gastrointestinal system
Peptic Ulcer.