The fact that you are only 18 does not matter. You can have such symptoms at any age and they can be serious at any age. What is your temperature? Have you recently been hit in the head? A number of different things could cause your symptoms. You should have them checked out. If the problem is an infection, antibiotics can clear it up in a few days. You will not need to suffer for months. If it is brain damage, you will not need to become a vegetable.
It could be meningitis. It is importnat to seek medical care immediately with these symptoms.
Lack of concentration and restlessness are two symptoms of ADHD.
The primary symptoms of irritable bowel syndrome are abdominal pain, bloating and discomfort. Others include constipation and diarrhea. Abdominal cramping and diarrhea could be symptoms of irritable bowel syndrome.
Headaches
headache
There are many different headache types. Many have similar symptoms. For appropriate diagnosis and treatment of your headache, seek the help of a headache specialist in your area.
Symptoms of guilt may include feelings of remorse, self-blame, anxiety, sadness, and a desire to make amends for the perceived wrongdoing. Physical symptoms can also manifest, such as decreased appetite, trouble sleeping, and general unease or restlessness.
Excessive vomiting Weight loss Restlessness Excessive Worry
The symptoms are same, but tend to be milder. Symptoms of typhoid are fever, (which goes up by step ladder pattern), weakness, headache. (Headache is very uncommon in children.)
Migraine is a common neurological disorder of which headache is only one of many symptoms.
At the moment, there is no cure for irritable bowel syndrome. However, there are treatments such as taking supplements or medication to decrease diarrhea and other symptoms.
Headache, nausea and vomiting are a couple of the symptoms, but just because you have those symptoms, it does not mean you have the flu. See the related questions below for more information about the symptoms.