In physical disability, an individual is not able to perform his daily life activities due to any physical disadvantage.

In cognitive disability, an individual is not able to perform his daily life mental activities due to any mental disadvantage.

1. ADHD (Attention Deficit hyperactivity disorder.
2. SPD (Senory processing disorder)
3. ASD (Autism spectrum disorder)
4. OCD (Obsessive compulsive disorder)
5. ODD (Oppositional defiant disorder)

Any disruption due to which an individual is not able to perform his daily life human activities effectively is known as a disorder.

In intellectual disability, an individual is not able to perform the normal human life mental activities and adaptive behaviour skills due to any mental disadvantage.