Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Get emergency help if hand symptoms begin with trouble breathing, faintness, or swelling of the lips, tongue, face, or throat.
These may be signs of a severe allergic reaction rather than ordinary chapping.
Seek same-day medical advice if you develop spreading redness, increasing warmth or swelling, pus, worsening pain, red streaks, or fever.
These changes can occur with a skin infection, especially around an open crack.
Book a routine appointment if the chapping does not improve with consistent skin protection and moisturizing, keeps returning, or interferes with sleep, work, or daily tasks.
You should also arrange an assessment for deep or repeatedly bleeding cracks, persistent blisters, or a rash that spreads beyond your hands.
Every sign above is quoted from the sofidex article on Chapped hands. If you are not sure, err upward — it is always reasonable to be checked.