Dr. David R Coursin MD

Cognitive dissonance definitionPsychologically speaking, cognitive dissonance is the mental discomfort (stress) that a person undergoes when he/she goes through simultaneous contradiction of ideas, values, or beliefs when doing something that runs counter to one or more of the ideas, values, or...

Autistic disorder is defined as the most severe type of autistic spectrum disorder (ASD). It is also called classic autism or Kanner’s Syndrome. This developmental disorder is characterized by challenges with communication, social interaction, and behavior. Autistic people often avoid interaction...

Since autism spectrum disorder (ASD) is a neurodevelopmental disorder, there are a variety of different symptoms. Different children with ASD will have different reactions, symptoms, and complications on different levels. Typically, autism impairs social and communication skills; however, the...

Insomnia is the inability to sleep that people of all ages can experience. It may be caused by a wide range of factors including physical discomfort or psychological problems. There is a direct relationship between insomnia and psychosocial factors. Factors such as increased age, conflicts with...

Doctors or physicians are categorized according to different factors including medical specialties and subspecialties. Most doctors specialize in a specific area of medicine. This article provides a summary of the different types of doctors in the medical field. AllergistsAllergists are also...

Erectile dysfunction (ED) is a condition in which a man is unable to get or maintain an erection long enough during sexual activity to satisfy his sexual needs. The condition was referred as impotence before medical research highlighted the underlying causes. Most men encounter erection problems at...