what causes stress overload?

Although just enough stress can be a good thing, stress overload is a different story — too much stress isn't good for anyone. For example, feeling a little stress about a test that's coming up can motivate you to study hard. But stressing out too much over the test can make it hard to concentrate on the material you need to learn.

Pressures that are too intense or last too long, or troubles that are shouldered alone, can cause people to feel stress overload. Here are some of the things that can overwhelm the body's ability to cope if they continue for a long time:

being bullied or exposed to violence or injury
relationship stress, family conflicts, or the heavy emotions that can accompany a broken heart or the death of a loved one
ongoing problems with schoolwork related to a learning disability or other problems, such as ADHD (usually once the problem is recognized and the person is given the right learning support the stress disappears)
crammed schedules, not having enough time to rest and relax, and always being on the go
Some stressful situations can be extreme and may require special attention and care. Posttraumatic stress disorder is a very strong stress reaction that can develop in people who have lived through an extremely traumatic event, such as a serious car accident, a natural disaster like an earthquake, or an assault like rape.

Some people have anxiety problems that can cause them to overreact to stress, making even small difficulties seem like crises. If a person frequently feels tense, upset, worried, or stressed, it may be a sign of anxiety. Anxiety problems usually need attention, and many people turn to professional counselors for help in overcoming them.

Signs of Stress Overload
People who are experiencing stress overload may notice some of the following signs:

anxiety or panic attacks
a feeling of being constantly pressured, hassled, and hurried
irritability and moodiness
physical symptoms, such as stomach problems, headaches, or even chest pain
allergic reactions, such as eczema or asthma
problems sleeping
drinking too much, smoking, overeating, or doing drugs
sadness or depression
Everyone experiences stress a little differently. Some people become angry and act out their stress or take it out on others. Some people internalize it and develop eating disorders or substance abuse problems. And some people who have a chronic illness may find that the symptoms of their illness flare up under an overload of stress.