What Leads to ADHD?

by on June 14th, 2012 at 9:08 am

Child ADHDIn a recent study conducted in Thailand, scientists learned that certain genetic and environmental factors could predispose children to ADHD.

The research was done at Vajira Hospital in Bangkok, where two groups of children — an ADHD group and a control group —were evaluated for risk factors and tested for allergies.

Among the forty children in each group, the children with ADHD had physical and genetic risk factors such as a greater history of head injuries and a higher incidence of mothers drinking alcohol during pregnancy, according to the scientists.

Allergies were also found to be more prevalent in the ADHD group. “Our results suggest that there were increased rates of allergic sensitization and allergic rhinitis in ADHD children,” the scientists reported.

In the study, Panadda Suwan and two colleagues noted that the ADHD children included thirty-one males and nine females and were much more likely to test positive for various inhaled allergens than the control group.

Suwan and colleagues added that a skin prick test was used to test for allergies to two types of house dust mites, Bermuda grass, American cockroach, German cockroach, and Johnson grass.

“Sensitization to Johnson grass was significantly higher in the ADHD group, 30.0% in ADHD cases and 10.0% in control cases,” said the scientists.

The scientists found that allergic sensitization may lead to the development of ADHD. They said that this could be due to an immunological reaction that may affect the brain.

Ultimately, they recommended that children with ADHD be tested for allergic sensitization.


  1. Suwan P., Akaramethathip D, and Noipayak P. “Association Between Allergic Sensitization and Attention Deficit Hyperactivity Disorder (ADHD),” Asian Pacific Journal of Allergy and Immunology.

2 Responses to “What Leads to ADHD?”

  1. Carol Hardee

    Aug 1st, 2012

    I gave birth to a daughter 50 years ago that has a sever learning disability that has affected her entire life. When she started school and failed first grade we started taking her to evaluation clinics to try to find out what could be done. She did attend a special school for a year in a college town when she was about 11 and it seemed to help her some. She is married and had two normal children. The doctors couldn’t seem to help me either with her problem. Our daughter was born naturally and had an extremely pointed head (what use to be called “a cone head.” The delivering doctor told me not to worry, that it would clear up in a couple of days, and it did. She was a beautiful child. However, since I have been told at the evaluation clinics that she had some brain cells that were damaged I seem to think that the fact that I was not large enough to deliver her and she should have been delivered by C-section, which doctors would have done today that this probably caused this learning disability that has followed us all of her life. Do you have any response regarding this? Thanks very much. ch

    • G. Bossik

      Aug 1st, 2012

      Hi, Carol.

      It would be hard to say what could have caused your daughter’s learning disability.

      A combination of special education techniques and cognitive behavioral therapy are often used for learning disabilities, though.


Leave a Reply

SEO Powered by Platinum SEO from Techblissonline