Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Emergency care may be needed for breathing difficulty, swelling of the face or throat, or other signs of a severe allergic reaction.
Contact the treating clinician promptly if symptoms worsen quickly, pain interferes with sleep or daily activity, or there are possible signs of infection.
Earlier review may also be appropriate if a medicine causes a new rash or other concerning effects.
Seek urgent medical care for rapidly spreading redness, severe swelling, fever, chills, confusion, faintness, or extensive new pustules.
Routine dermatology follow-up helps assess whether pustules are returning, nail damage is progressing, or treatment is causing side effects.
Photographs taken at similar intervals may help document changes.
Tell the clinician about new skin areas, joint pain, changes in function, or difficulty following the treatment plan.
Every sign above is quoted from the sofidex article on ACH. If you are not sure, err upward — it is always reasonable to be checked.