Typically, Reye syndrome occurs when a person is beginning to recover from a viral illness. Symptoms include nausea, vomiting, lethargy, and indifference. The child may exhibit irrational behavior, delirium, aggressiveness, or rapid breathing. Fever is not usually present. The course and severity of the illness vary. Reye syndrome can be mild and self-limited, or it can progress rapidly, causing death within hours of onset, usually from brain swelling. The progression may also stop at any stage.

Reye syndrome is a severe illness of unknown cause that affects all organs in the body, particularly the brain and liver.

Although the exact cause of this illness remains unknown, research has shown that taking aspirin and other related medications after a viral illness, such as chickenpox, flu, or other respiratory tract illness, significantly increases the chance of Reye syndrome. However, aspirin and aspirin-containing medications do not have to be ingested to bring on Reye syndrome.

Reye syndrome is rare. Since 1994, two or fewer cases per year are reported in the U.S. There has been a dramatic decline of cases since the 1980s, when health experts began educating parents about the use of aspirin and aspirin-containing products for the treatment of chickenpox and other flu-like illnesses. Reye syndrome cases occur throughout the year, but are more frequent when viral diseases are epidemic, such as the winter months, or following an outbreak of chickenpox or influenza.

Aspirin and aspirin-containing products should not be used for treatment of viral illnesses. Do not give aspirin to children under 12 years except on medical advice and avoid in children aged up to and including 15 years if feverish. Read labels carefully. Some medication labels may use the words acetylsalicylate, acetylsalicylic acid, salicylsalicylic, salicylamide, phenyl salicylate, etc., instead of the word aspirin.

Immediate medical attention is vital. Statistics indicate an excellent chance of recovery when Reye syndrome is diagnosed and treated in its earliest stages.

Diagnosis is done based on medical symptoms rather than laboratory results. Reye syndrome can be misdiagnosed as encephalitis, meningitis, diabetes, drug overdose, poisoning, Sudden Infant Death, or psychiatric illness.

There is no cure for this disease. Successful management, which depends on early diagnosis, is primarily aimed at protecting the brain against irreversible damage by reducing brain swelling, and at preventing complications. Glucose and electrolyte solutions may be given to correct blood chemistry levels. A ventilator sometimes is needed to help with breathing.

Reye's syndrome has been found to affect people of all ages; however, more than 90 percent of those affected are under age 15.

Irritable bowel syndrome, or IBS, is a condition suffered buy one in five people. The symptoms of IBS can be mild, but more severe symptoms can limit your ability to function normally. Abdominal pain after eating and irregular bowel habits are the most common symptoms. Treatments are designed to relieve the symptoms and a colon cleanse can help during periods of constipation.

Carcinoid syndrome requires one or more of the following for laboratory confirmation of the diagnosis: increased blood serotonin with decreased blood tryptophan, increased chromogranin A and increased urine 5HIAA or indole-3-acetic acid . In spite of the symptoms, if these criteria are not present, carcinoid syndrome is not the diagnosis.

Each individual may experience symptoms differently. Besides high fluid pressure in the skull, which occurs in about 10 percent of patients, another symptom is a chronically runny nose. The symptoms of empty sella syndrome may resemble other conditions or medical problems. Consult a physician for diagnosis.

The symptoms of Scotopic Sensitivity cluster under five different major areas, including light sensitivity, inadequate background accommodation, poor print resolution, restricted span of recognition, and lack of sustained attention. Most individuals who have been diagnosed with this disorder have some of the symptoms in at least one or two of these five major areas.

The official diagnostic criterion of the Center for Disease Control is listed separately from Fibromyalgia. This disease is very similar to Fibromyalgia, but pain is a less prominent symptom. Put simply, if you are unusually tired or exhausted out of proportion but cannot sleep or wake un-refreshed from your sleep, you probably have Chronic Fatigue Syndrome.

Symptoms usually start gradually, with frequent burning, tingling, or itching numbness in the palm of the hand and the fingers, especially the thumb and the index and middle fingers. Some carpal tunnel sufferers say their fingers feel useless and swollen, even though little or no swelling is apparent. The symptoms often first appear in one or both hands during the night, since many people sleep with flexed wrists.

Symptoms of Sjögren's syndrome include having extremely dry eyes and mouth that has persisted for at least 3 months and is not due to medications. You may have itching and burning in your eyes, and your mouth may feel as though it is full of cotton. Sjögren's syndrome may develop in a person who has a connective tissue disorder, such as rheumatoid arthritis, lupus, or scleroderma, and is then classified as secondary Sjögren's syndrome.

Many people who have nephrotic syndrome do not notice any physical symptoms. They have greater amounts of protein in their urine but are most often unaware that they do. The most common early symptom of nephrotic syndrome, in both children and adults, is swelling in the tissues (edema) around the eyes or in the feet or ankles. Swelling in the lungs can make it difficult to breathe.

Symptoms of Shaken Baby Syndrome: Irritability, Sluggishness, Vomiting, Poor appetite, Difficulty Breathing, Loss of Consciousness, Seizures, Not Sucking or Swallowing, Unable to Track Movement with Eyes, Not Smiling or Making Sounds.