Mental health is as important as physical health. A child needs to be active and mentally fit to grow into a strong adult. Some of the main symptoms that suggest that a child may not be mentally healthy include mood swings, weight loss, physical harm, lack of concentration, anxiety, ASD (autism spectrum disorder), etc. Even a kid of five years may face anxiety, and hence the mental health needs to be cured as it may affect the life of the person immensely. Also, the parent needs to be continuously monitoring their child for any signs of autism. There are no specific diagnostic tests for a mental disorder, but the doctors suggest to take some blood tests and X-rays to get an idea.