It seems that you may be having prurigo simplex
There are erythematous papular and vesicular erutions , mostly on extremities and trunk.
There may be multiple aetiology.
,irritations,food,pollutants,insects..etc may cause the disease.
You consult dermatologist
for firm doagnosis and treatment.
for 2 to 3 weeks intappering dose.,antihistaminics and antibiotics may improve the condition.
Application of steroid cream with antbiotics would be helpful.
Avoid soap bath., you can use dettol liquid for bath.
Avoid worries and stress.
I think, you will be benefitted.
I hope got my answer.
Dr. Ilyas Patel MD