1. Environmental Hazards
1.1. Prescription and over the counter Drugs
1.2. Diet
1.3. Mother`s Age
1.4. Stress and emotional state
1.5. Poverty
1.6. Hydrocephalus
1.7. Spina Bifida
2. Maternal Diseases
2.1. Rubella
2.2. HIV / AIDS
2.3. Cytomegalovirus and sexually transmitted disseases
2.4. Chronic illnesses
2.5. Environmental Hazards
3. Chromosomal Disorders
3.1. Trisomy's
3.1.1. Down`s Syndrome
3.1.2. Trisomy 13
3.1.3. Trisomy 18
3.2. Sex-Chromosome Anomilies
3.2.1. Klinefelters Syndrome
3.2.2. Turners Syndrome
4. Teratagon
4.1. Drugs
4.1.1. Smoking
4.1.1.1. Low birth weight
4.1.1.2. Diseases
4.1.1.2.1. Asthma
4.1.1.2.2. Otitis Media
4.1.1.2.3. Respiratory infections
4.1.1.3. Premature Birth
4.1.1.4. small head circumference
4.1.1.5. Shorter stature
4.1.1.6. Learning difficulties
4.1.1.7. Attention difficulties
4.1.1.8. Social and emotional difficulties
4.1.1.9. Cleft Lip and Palate
4.1.2. Drinking
4.1.2.1. Respiratory infections
4.1.2.2. Fetal Alcohol Syndrome Disorder (FASD)
4.1.3. Cocaine
4.1.3.1. Brain Damage
4.1.3.2. Low Birth Weight
4.1.3.3. Premature Birth
4.1.3.4. Learning and attention Difficulties
4.1.3.5. Social and Emotional Difficulties
4.1.4. Marijuana and Heroin
4.1.4.1. Premature Birth
4.1.4.2. New Born Addicted to Heroin
4.1.4.3. Learning, Attention and Behavioral Difficulties
5. Genetic Disorders
5.1. Autosomal Disorders
5.1.1. Cystic Fibrosis
5.2. Sex Linked Disorders
5.2.1. Hemophilia
5.2.2. Fragile X Syndrome