Change in the type of drug or alcoholic beverage consumed. Development of a negative attitude toward environment, school, peers, etc. Alcohol and other drugs have two effects on the central nervous system. This agitation is commonly known as a hangover . Some common symptoms of a hangover are headache, upset stomach, fatigue, thirst, and a general feeling of uneasiness and irritability.
Frequent hangovers are usually the indication of a serious problem with alcohol.
Some experts attribute increased tolerance to a learning process. Loss of control. This is the major symptom of a problem. While these signs may be helpful to identify a person's problem with substances, much of what can be done depends on how well the person intervening knows the individual and the relationship that the two of them have established. Frequently faculty, staff, friends and roommates of the student are asked to assist in the intervention process.