Gastrointestinal symptoms
Acute abdominal pain (85-90% of attacks)
Nausea/vomiting
Constipation and/or diarrhea
Port wine-colored urine
Diffuse musculoskeletal pain
Neurologic symptoms
Headache
Seizure
Sensory loss (40%)
An indication of a severe and potentially life-threatening attack
Neuropathy can progress to respiratory failure in hours or days
Bladder paresis
Psychiatric symptoms
Increased risk of schizophrenia and bipolar disorder 
Agitation, confusion, combativeness
Anxiety & depression (55%)
Acute abdominal pain (85-90% of attacks)
Nausea/vomiting
Constipation and/or diarrhea
Nausea/vomiting
Constipation and/or diarrhea
Headache
Seizure
Sensory loss (40%)
An indication of a severe and potentially life-threatening attack
Neuropathy can progress to respiratory failure in hours or days
Bladder paresis
An indication of a severe and potentially life-threatening attack
Neuropathy can progress to respiratory failure in hours or days
Increased risk of schizophrenia and bipolar disorder 
Agitation, confusion, combativeness
Anxiety & depression (55%)
Porphyria
Abdominal aortic aneurysm
Scurvy
Aortocaval fistula
Rickets
Acute gastroenteritis
Pruritus ani
Aortoenteric fisulta