this condition is called acute urticaria
it needs to be managed with oral antihistamines, the dose and type of which depends on the severity.
occasionally we need to resort to oral steroids
for short duration.
lotion does help
please watch for swelling of lips, breathlessness or difficulty in swallowing as that can be an emergency . in that case you need to visit an emergency immediately
why not consult a dermat who will help you by prescribing an appropriate medicine with correct dose.