Different Treatment Approaches:
1. Physiological Approach
a. Medication Treatment
b. Diets
c. Sensory Activities
2. ABA Approach
a. Discrete Trial Teaching
b. Incidental Teaching
c. Pivotal Response Training
d. Video Modeling
e. Incorporating Peers and Parents
    Training ABA
f. 13 Different Methods Within ABA
3. Developmental and Social-Relational Approach
a. Transactional Model
b. DIR/FloorTime
c. Responsive Teaching
d. The Hanen Program
e. Relationship Development Intervention RDI
f. Enhanced Milieu Teaching
g. The Denver Model and Early Start Denver Model
h. Project ImPACT
i. Pivotal Response Treatment
j. The CERTS Model
4. Cultural Approach
a. TEACCH Aprproach
b. Physical Organization
c. Work Station
d. Task Organization
5. Communication Focused Approach
a. Verbal Training
b. PECS
c. ASL
d. Voice-Output Communication Aids (VOCA’s)
6. Social Skills and Social Relationships
a. Scripts and Script Fading
b. Video Modeling
c. Social Stories
d. Superflex
e. Play Therapy

Types of Treatments
There are many different types of treatments available. For example, auditory training, discrete trial training, vitamin therapy, anti-yeast therapy, facilitated communication, music therapy, occupational therapy, physical therapy, and sensory integration.

The different types of treatments can generally be broken down into the following categories:
1. Behavior and Communication Approaches
2. Dietary Approaches
3. Medication
4. Complementary and Alternative Medicine

Behavior and Communication Approaches Therapy (Proven)
According to reports by the American Academy of Pediatrics and the National Research Council, behavior and communication approaches that help children with ASD are those that provide structure, direction, and organization for the child in addition to family participation.

A notable treatment approach for people with an ASD is called applied behavior analysis (ABA).  ABA is a well-developed scientific discipline among the helping professions that focuses on the analysis, design, implementation, and evaluation of social and other environmental modifications to produce meaningful changes in human behavior. ABA includes the use of direct observation, measurement, and functional analysis of the relations between environment and behavior. ABA uses changes in environmental events, including antecedent stimuli and consequences, to produce practical and significant changes in behavior. These relevant environmental events are usually identified through a variety of specialized assessment methods. ABA is based on the fact that an individual’s behavior is determined by past and current environmental events in conjunction with organic variables such as their genetic endowment and physiological variables. Thus, when applied to ASD, ABA focuses on treating the problems of the disorder by altering the individual’s social and learning environments.

Some common "boxed" ABA programs that are well-known and are based on ABA principles. Following are some examples:
1.  Discrete Trial Training (DTT)
      DTT is a style of teaching that uses a series of trials to teach each step of a desired behavior or response. 
      Lessons are broken down into their simplest parts and positive reinforcement is used to reward correct 
      answers and behaviors. Incorrect answers are ignored.

2.  Early Intensive Behavioral Intervention (EIBI)
      This is a type of ABA for very young children with an ASD, usually younger than five, and often younger 
       than three.

3.  Pivotal Response Training (PRT)
      PRT aims to increase a child’s motivation to learn, monitor his own behavior, and initiate communication 
      with others. Positive changes in these behaviors should have widespread effects on other behaviors.

4.  Verbal Behavior Intervention (VBI)
      VBI is a type of ABA that focuses on teaching verbal skills.
      Other therapies that can be part of a complete treatment program for a child with an ASD include:

5.  Treatment and Education of Autistic and related Communication-handicapped CHildren (TEACCH)
      TEAACH uses visual cues to teach skills. For example, picture cards can help teach a child how to get 
      dressed by breaking information down into small steps.

6.  PECS Picture Exchange Communication System:
      PECS uses picture symbols to teach communication skills. The person is taught to use picture symbols to 
      ask and answer questions and have a conversation.

Early Intervention Services  (ABA Therapy)
Research shows that early intervention treatment services can greatly improve a child’s development. Early intervention services help children from birth to 3 years old (36 months) learn important skills. Services include therapy to help the child talk, walk, and interact with others. Therefore, it is important to talk to your child’s doctor as soon as possible if you think your child has an ASD or other developmental problem.

Even if your child has not been diagnosed with an ASD, he or she may be eligible for early intervention treatment services. The Individuals with Disabilities Education Act (IDEA) says that children under the age of 3 years (36 months) who are at risk of having developmental delays may be eligible for services. These services are provided through an early intervention system in your state. Through this system, you can ask for an evaluation.

In addition, treatment for symptoms, such as speech therapy for language delays, often does not need to wait for a formal ASD diagnosis. While early intervention is extremely important, intervention at any age can be helpful.

Dietary Approaches
Some dietary treatments have been developed by reliable therapists. But many of these treatments do not have the scientific support needed for widespread recommendation. An unproven treatment might help one child, but may not help another.

Many biomedical interventions call for changes in diet. Such changes include removing certain types of foods from a child’s diet and using vitamin or mineral supplements. Dietary treatments are based on the idea that food allergies or lack of vitamins and minerals cause symptoms of ASD. Some parents feel that dietary changes make a difference in how their child acts or feels.

If you are thinking about changing your child’s diet, talk to the doctor first. Or talk with a nutritionist to be sure your child is getting important vitamins and minerals.

Medication
There are no medications that can cure ASD or even treat the main symptoms. But there are medications that can help some people with related symptoms. For example, medication might help manage high energy levels, inability to focus, depression, or seizures.

Complementary and Alternative Treatments
To relieve the symptoms of ASD, some parents and health care professionals use treatments that are outside of what is typically recommended by the pediatrician. These types of treatments are known as complementary and alternative treatments (CAM). They might include special diets, chelation (a treatment to remove heavy metals like lead from the body), biologicals (e.g., secretin), or body-based systems (like deep pressure).

These types of treatments are very controversial and very dangerous. Current research shows that as many as one third of parents of children with an ASD may have tried complementary or alternative medicine treatments, and up to 10% may be using a potentially dangerous treatment. Before starting such a treatment, check it out carefully, and talk to your child’s doctor.