It seems that you are having vesicular eruptions on hands and feet.
They would be pompholyx
The vesicles contain serous fluid.
The disease may be due to allergy to some contactants.
Take antihistaminics if you ave itching.
Take steroids in tappering dose.
And if there is infection, you may take antibiotics.
You are having lesion in pubic area, that may be impetigo. Antibiotics may improve.
You are having lesion in mouth also, that would be aphthous ulcer. That may be improved by betadine
gargles and oral folic acid
You may consult dermatologist
I hope you got my answer.
Dr. Ilyas Patel MD