Claiming TaeKwonDoe

Hello,

 

My son was diagnosed with ADHD last June, and in relation to this it was recommended that he should attend martial arts.  His Dr. said that anything in relation to his ADHD I can claim on my income tax. Please let me know how to go about doing this. I do have the letter of diagnoses also which I can upload. Do I need a letter from his Dr recommending this for him so help control his emotions, gain confidence as he is frustrated most time when he cannot complete a task properly. Since taking this class, I have seen a major difference so I do believe that this should be something I can claim.