I believe this is one of the most credible sources for information on this topic as NINDS is one of the US's National Institutes of Health (NIH), and has been for almost 75 years.

NINDS's page on TBI is a broad page of information regarding the topic with just about everything you need to know about it, such as symptoms, causes, and treatment. Though both the book and the website discuss TBI, I am of the opinion that the website tackles the subject WAY more in depth than the book.

First, the webpage is not hard to find with a quick google search and has loads of info on TBI. Yet I couldn't even find the term TBI written anywhere in the chapter outside of some small references to the topic. I will however give the book credit where it's due, as the NINDS site doesn't mention the ALS symptoms pertaining to head injuries in sports.

All in all, despite the books lack of focus on the topic I believe it's worth reading both the NINDS page and the book for information on TBI.

Post-traumatic stress disorder (PTSD) is a mental health condition that can arise after experiencing or witnessing traumatic events. The causes and effects of PTSD are multifaceted, involving various types of trauma and broad implications for individuals' mental health and societal interactions.

Causes of PTSD

1. Types of Traumatic Events

PTSD can develop after several types of distressing experiences, including:

Serious accidents: Events such as car crashes can trigger PTSD.

Violent assaults: This includes physical or sexual assault, which has a profound impact on mental health.

Childhood trauma: Abuse during childhood is a significant contributor to PTSD risk.

Exposure to conflict: Experiences associated with war and violence can lead to PTSD.

Health crises: Serious health issues or traumatic childbirth experiences can also be involved.

Witnessing trauma: Observing serious harm to others or being directly involved in violent situations can lead to the development of PTSD.

2. Preexisting Vulnerabilities

Certain factors may increase the risk of developing PTSD after a traumatic event, such as:

History of mental illness: Individuals with prior anxiety or depression are at a higher risk.

Genetic factors: A family history of mental health issues may predispose a person to PTSD.

Lack of support: Insufficient social support after a traumatic event increases the likelihood of PTSD development.

Effects of PTSD

1. Mental Health Implications

PTSD significantly affects mental health, leading to:

Intrusive memories: Individuals may experience frequent flashbacks or unwanted distressing thoughts related to the trauma.

Avoidance behaviors: This includes steering clear of places, people, or activities that remind one of the traumatic event.

Negative alterations in mood and cognition: This can involve persistent negative thoughts, feelings of hopelessness, and emotional numbness.

Hyperarousal: Symptoms such as irritability, being easily startled, and difficulty concentrating can manifest.

2. Physical Health Consequences

Individuals with PTSD often experience long-term physical health issues, including:

Chronic pain: Conditions like arthritis and other somatic complaints can arise in individuals with PTSD.

Sleep disturbances: Symptoms like insomnia and recurrent nightmares are common among those with PTSD.

Increased vulnerabilities: PTSD can lead to other health complications, such as cardiovascular disease and gastrointestinal issues.

3. Social and Economic Impacts

The effects of PTSD extend to wider social and economic aspects:

Stigma: Individuals with PTSD often face societal stigma, affecting their ability to find employment and maintain relationships.

Economic burden: The financial costs associated with PTSD can be substantial; estimates suggest that PTSD incurs higher costs per individual than various physical health conditions.

Disruption in daily life: PTSD can severely impair a person's ability to engage in normal activities, affecting both work and personal relationships.

​In conclusion, PTSD is caused by a range of traumatic experiences, compounded by individual vulnerabilities that can lead to complex psychological, physical, and social repercussions.​ Addressing these factors through support and treatment can be vital in managing PTSD effectively.

The book states that PTSD can occur when directly exposed to trauma, either on a personal, witnessed, ongoing or discovered level (PG. 88). For some people when exposed to these kinds of trauma, their fight or flight-freeze response breaks or becomes damaged, causing PTSD (PG. 87). The AI on the other hand provided examples of common trauma that could lead to PTSD, as well as highlighting that people with certain pre-existing health issues can be at a higher risk for PTSD.

Now moving onto the effects of PTSD. The book states that those suffering may find themselves experiencing intrusive thoughts and feelings, insomnia, suicidal thoughts, irritability, outbursts of anger, flashbacks, and more (PG. 88). The AI highlighted the same symptoms as the book, but also mentioned the physical effects that can occur such as chronic pain, as well as pointing out that those suffering from PTSD are often culturally stigmatized and shamed.

My family and I had gone on a camping trip (it might've been Tawas Point State Park, cant remember). One of the days we were there we went down to the beach for a swim. We brought a cooler with us loaded with assorted drinks to combat the heat that day, which I remember being pretty bad. I had opened up a drink (a can of Pepsi) and left it near our setup on the beach before going into the water. After the swim I went back and took a swig of my Pepsi. This next part is gross so be warned! Before I swallowed I could feel something solid floating around in my mouth which I immediately spat out. To my horror I had spat out a big ol' Beetle, and proceeded to wash my mouth out with water and ran a panic lap or two lol.

After that, every time I'm handed a drink I automatically grimace and constantly double check my drinks if I leave them unattended.

Unconditioned Stimulus (UCS): This would be the beverage. It elicits an unlearned response from me in the form of thirst.

Unconditioned Response (UCR): This is the natural feeling of thirst I feel when I want and see a nice drink.

Conditioned Stimulus (CS): The beetle happens to be CS because it now elicits a response of disgust from me after my beach incident when I see it.

Conditioned Response (CR): I now have to double check my open drinks in response to the beach incident involving the beetle, and sometimes lose my interest in what I'm drinking altogether.

Of the four options, I believe I've experienced discrimination and extinction. I only really have these feelings of disgust when seeing beetles (or similar bugs) when it comes to my drinks. Flies, Bees, and even spiders don't concern me as much, which is why I believe this is discrimination.

Recently though, I haven't found myself worrying or being concerned with my drinks. This may be due to the fact that I haven't seen a beetle in a long time. Regardless I believe that this would be my problem's extinction.

Let's hope I don't experience any spontaneous recovery.

But, personally I'm conflicted about the USE of AI, at least in this regard. On one hand you can get quick and detailed info on what you need, but on the other hand you can't really tell how accurate the information is without checking it yourself, which defeats the purpose of using the AI.

I'm also bothered that there's real potential that AI could replace people's jobs, such as artists and screen writers. Even now if you Google an image there's a high chance of getting an AI generated image.

AI is becoming more and more ingrained with our lives and I'm not so certain that it is a good thing. I guess only time will tell.