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
Call emergency services if swelling of your lips, tongue, face, or throat occurs with difficulty breathing, wheezing, faintness, or trouble swallowing.
These can be signs of a severe allergic reaction.
And for anyone, someone who:
has lips or skin that look pale, blue, grey or blotchy
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 you believe has taken an overdose or swallowed something poisonous
2
Is any of this happening?
Be seen today
Seek same-day medical advice if the lump becomes very painful, hot, or red; releases pus; or is surrounded by redness that is spreading.
Fever, chills, or feeling generally unwell may indicate an infection requiring prompt care.
People with a weakened immune system or poorly controlled diabetes should also seek early advice about a possible skin infection.
And for anyone, someone who:
has a wound that is hot, spreading red, or leaking pus
3
Does any of this apply?
Book an appointment
Arrange a routine appointment if a lump:
Lasts longer than two weeks without a clear explanation
Is getting larger, hard, or difficult to move
Returns after previous treatment
Bleeds, forms a persistent sore, or changes in colour or shape
Causes ongoing pain or limits movement
Is a swollen lymph node that does not settle after an illness
And for anyone, someone who:
has noticed a lump, a mole that has changed, or unexplained weight loss
Every sign above is quoted from the sofidex article on Skin lumps. If you are not sure, err upward — it is always reasonable to be checked.