Hi welcome to Health care magic forum. The condition is called utricaria causes being allergy
external allergens may be food drink soap powder which is recently used or to the pus of the injury
eosinofelia may also cause rash
I advise you to consult a doctor for diagnosis and treatment.
Besides i advise you to follow some diet recomendations as
avoid giving egg sea foods and brinjal. Take more of green leafy
vegetables pulses sprouts milk fruits and juices to build blood
general health and resistance to fight such health situations.
Wishing for a quick recovery and thanks for calling.