A GAF score is a way for mental health clinicians to assess a person's psychological, social and cognitive functioning. It is considered the axis five on the Axis diagnostic scale which is used to provide a diagnosis for a person (Axis 1 is the main diagnosis). Here is what the numbers mean:
100 - 91 Superior functioning in a wide range of activities, life’s problems never seem
to get out of hand, is sought out by others because of his or her many positive
qualities. No symptoms.
90 - 81 Absent or minimal symptoms, good functioning in all areas, interested and
involved in a wide range of activities, socially effective, generally satisfied with
life, no more than everyday problems or concerns.
80 - 71 If symptoms are present they are transient and expectable reactions to
psychosocial stressors; no more than slight impairment in social,
occupational, or school functioning.
70 - 61 Some mild symptoms OR some difficulty in social, occupational, or school
functioning, but generally functioning pretty well, has some meaningful
60 - 51 Moderate symptoms OR moderate difficulty in social, occupational, or school
functioning in social, occupational, or school functioning.
50 - 41 Serious symptoms OR any serious impairment in social, occupational, or
40 - 31 Some impairment in reality testing or communication OR major impairment in
several areas, such as work or school, family relations, judgment, thinking, or
30 - 21 Behavior is considerably influenced by delusions or hallucinations OR serious
impairment in communication or judgment OR inability to function in almost all
20 - 11 Some danger of hurting self or others OR occasionally fails to maintain
minimal person hygiene OR gross impairment in communication.
10 - 01 Persistent danger of severely hurting self or others OR persistent inability to
maintain minimal personal hygiene OR serious suicidal act with clear
expectation of death.
GAD is Generalized Anxiety disorder which is usually given when a person feels a general sense of anxiety that is hard to pinpoint. They worry and experienced anxiety more than would be considered normal yet do not know why. Some of the symptoms include mild anxiety, depression, trouble with sleep and some physical symptoms such as muscle tension. The person knows that they feel upset but are unable to find a way to feel calmer. The symptoms are enough to bother them but not enough to interrupt their ability to function in life.
I hope this has helped you,