Caffeine warning: The recommended dose of this product contains about as much caffeine as a cup of coffee. Limit the use of caffeine-containing medications, foods, or beverages while taking this product because too much caffeine may cause nervousness, irritability, sleeplessness, and, occasionally, rapid heart beat.
The list of signs and symptoms mentioned in various sources for Hartnup Disease includes the 23 symptoms listed below: 1  Itchy rash only on light exposed areas. 2  Headache. 3  Intermittent ataxia. 4  Abdominal pain. 5  Chest pain. 6  Pain in the extremities. 7  Crying spells. 8  Mental retardation if untreated. 9  Fainting.
Signs and symptoms. A symptom is something the patient feels and reports, while a sign is something other people, such as the doctor detect. For example, pain may be a symptom while a rash may be a sign. Norovirus infection causes gastroenteritis-inflammation of the stomach and the small and large intestines. Norovirus infection signs and symptoms include: 1  Nausea-usually the first symptom. 2  Vomiting-sometimes violent and sudden. 3  Stomachache (abdominal pain). 4  Abdominal cramps. 5  Watery or loose diarrhea. 6  Weight loss.