Hi
This looks like urticaria
You Have to find a reason for the same and consult a dermatologist nearby you because it could be due to many things like due to environmental allergies eating habits or food allergies as well as from the drugs or cosmetic that you are using
Next Steps
Consult via Practo pro to get a proper diagnosis and treatment for the same
Health Tips
Avoid sour fruits and vegetables like lemon,buttermilk, pickle etc also you can get an allergy test done for the same