Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
1
Is any of this happening now?
Call 911
Get urgent or emergency help for:
Fainting, confusion or difficulty waking
Little or no urine
Severe or rapidly worsening abdominal pain
Heavy rectal bleeding
Trouble breathing or signs of shock, such as cold, clammy skin
Unusual bruising, marked paleness and reduced urination
Other emergency signs, for anyone
Someone who is struggling to breathe, gasping, choking, or cannot get words out
Someone who has chest pain, tightness or pressure lasting more than a few minutes
Someone who has sudden weakness or drooping on one side of the face or body, slurred speech, or sudden confusion
Someone who is unconscious, or cannot be woken
Someone who is bleeding heavily and it will not stop with firm pressure
Someone who has had a seizure that will not stop, or does not wake up afterwards
Someone who has lips or skin that look pale, blue, grey or blotchy
Someone who you believe has taken an overdose or swallowed something poisonous
2
Is any of this happening?
Be seen today
Seek prompt medical advice if you have bloody diarrhoea, a high or continuing fever, worsening stomach pain, or diarrhoea that is not improving.
Medical review is also important if you are pregnant, have a weakened immune system, or care for a young child or older adult with symptoms.
Contact a healthcare professional promptly if you cannot keep fluids down or have signs of dehydration, such as a very dry mouth, dizziness, dark urine or urinating much less than usual.
These symptoms do not prove that a complication is present, but they need urgent assessment.
Every sign above is quoted from the sofidex article on Shigellosis. If you are not sure, err upward — it is always reasonable to be checked.