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 emergency help for sudden loss of vision or severe eye pain.
Uncontrolled bleeding from an open area also needs emergency care.
These events are not typical of uncomplicated CMTC, but they require immediate assessment.
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:
A new ulcer or a wound that is not healing
Increasing pain, warmth, swelling, or redness
Pus, fever, or other signs of infection
New difficulty walking or using an affected limb
A cloudy or enlarged eye, excessive tearing, or sensitivity to light
3
Does any of this apply?
Book an appointment
Arrange a routine appointment if a birthmark has a persistent net-like pattern that does not disappear with warming.
A child with known CMTC should also be reviewed if one limb appears to be growing differently, walking becomes uneven, or the skin pattern changes unexpectedly.
Every sign above is quoted from the sofidex article on Van lohuizen syndrome. If you are not sure, err upward — it is always reasonable to be checked.