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
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 for signs of infection, rapidly worsening symptoms, severe pain, or eczema near the eyes.
Painful spreading blisters, round open sores, fever, or feeling very unwell require urgent same-day assessment.
3
Does any of this apply?
Book an appointment
Routine follow-up is useful when eczema is not well controlled, treatment instructions are unclear, or prescription medicines are being used regularly.
A review may cover the diagnosis, skin-care routine, correct use of topical treatment, possible triggers, side effects, sleep, and the effect on daily life.
Arrange a nonurgent appointment if:
Flares are becoming more frequent or difficult to control
Eczema is affecting sleep, school, work, or emotional well-being
A treatment causes troublesome irritation or other possible side effects
The diagnosis or treatment plan is unclear
You are considering removing foods from your or your child's diet
Some people are advised to use prescribed anti-inflammatory treatment on frequently affected areas at planned intervals to reduce flares.
This should follow the person's treatment plan rather than a one-size-fits-all schedule.
The article also says
Long-term management often involves continuing moisturizer even when the skin looks clear.
Every sign above is quoted from the sofidex article on Atopic dermatitis. If you are not sure, err upward — it is always reasonable to be checked.