The number of symptoms associated with CFIDS can be astounding. Taken by themselves, they often will not mean anything. The symptoms I am including is by no means *all* of the possible symptoms. I will catagorize these into sections based on area involved.
Symptoms of Chronic Fatigue and Immune Dysfunction Syndrome
Cognition

Confusion, inability to think clearly

Concentration deficit

Short term memory deficit

Aphasia

Dyscalculia

Easy Distractibility

Attention deficit
Dermatological

Rash, flushing of face

Eczema

Hair Loss

Recurrent sores


Fatigue

Activity level less than 50% of pre-illness level

Post exertional fatigue
Gastrointestinal

Irritable Bowel

Nausea

Abdominal Cramps

Esophageal Reflux

Diarrhea

Constipation
Flu-Like Illness

Fever, chills, sweating

Painful or swollen lymph nodes

cough

sore throat

recurrent flu-like illness

Infections
Neurological

Spatial disorientation

Dizziness/Vertigo

Muscle twitching

Tinnitus

Numbness/Tingling

Frequent sighing

Staggering gait

Restless Leg Syndrome

Low Blood pressure

Tremor

Fainting
Ocular

Visual acuity changes

eye pain

Focus difficulty

Difficulty wearing contacts due to dryness of eyes


Pain, etc.

Muscle pain

Headache

Joint Pain

Muscle weakness

TMJ pain
Psychological

Mood Swings

Irritability

Anxiety

Depression

Personality Change

Panic attacks
Sensitivities and allergies

Sensitive to inhalants, odors, foods and medicines

Noise sensitivity

Alcohol intolerance

Increased allergies

Alteration in taste
Sleep Disorders

Unrefreshing sleep

Difficulty falling asleep

Difficulty staying asleep

Altered sleep/wake schedule

Vivid dreams
Thermoregulation

Heat or cold intolerance

Subnormal body temperature

Cold extremities

Feeling cold often

Exacerbation of symptoms during temperature extremes
Urogenital

Painful urination

Increased or severe PMS

Fluid retention

Decreased Libido

Frequent urination
Other

Frequent thirst

Dry eyes or mouth

Symptoms worsened by air travel
To be diagnosed, four or more of the following symptoms must be present as well as lasting more than six months:

impaired memory or concentration;
sore throat; 
tender or swollen lymph nodes in the armpit ot neck;
muscle pain;
joint pain without swelling or redness;
unreshing sleep;
post exertional malaise lasting more than 24 hours;
headaches of a new type (new in severity, type or pattern).

Before a diagnosis can be made, physicians must exclude other disorders known to cause fatigue,  depression, medications that cause fatigue as a side effect and alcohol and/or drug abuse.