Those who struggle with a personality disorder have great difficulty dealing with other people. They tend to be inflexible, rigid, and unable to respond to the changes and demands of life.
Could depression actually be a form of infectious disease? â Turhan Canli. Chronic Lyme disease and its co-infections can cause depression. If we look at the cousin of Lyme disease, Syphilis, and its studies related to mental health issues, we see depression, anxiety disorders and much more.
Digestive Problems and the Effects of Anxiety. Anxiety causes a lot of different symptoms. Anxiety causes headaches, it causes muscle pain - it even causes cold feet. But not everyone experiences all of those symptoms, because every individual person's anxiety is different.