Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Call emergency services for severe trouble breathing, chest pain, fainting, or sudden severe weakness.
These are not typical symptoms of skin-limited amyloidosis, but they require emergency assessment regardless of the cause.
And for anyone, someone who:
Contact a healthcare professional promptly if you have nodular cutaneous amyloidosis and develop unexplained swelling of the legs, foamy urine, increasing breathlessness, numbness, unusual weakness, unexplained weight loss, or persistent diarrhoea.
These symptoms have many possible causes, but they may require assessment for a condition affecting more than the skin.
Seek urgent medical care for rapidly increasing redness, warmth, swelling, pus, fever, or severe pain around broken skin, as these may suggest infection.
And for anyone, someone who:
Arrange a routine appointment if you develop persistent itchy, darkened, thickened, or lumpy skin that has not been assessed.
You should also seek review if a known area is spreading, bleeding repeatedly, becoming painful, or no longer responding to your usual management.
Every sign above is quoted from the sofidex article on Primary cutaneous amyloidosis. If you are not sure, err upward — it is always reasonable to be checked.