Thank you for posting in Doctorspring.com.
The condition is Hidradenitis suppurativa.It affects sweat forming areas like underarms,inner thigh etc.It presents as multiple abscesses where sweat glands are more.
As you produce lots of sweat,this condition is common.
The first image typically shows an abscesses with pus.The pus has to be drained and you should use Antibiotic.
I usually prescribe Antibiotics like Clindamycin tablet and Cefuroxime tablet along with antiinflammatory tablet to my patients with similar complaints. If the symptoms recur,i prefer to excise the affected area .
Now,you should get the pus drained and when you come to India,you get the tissue excised by surgery.The tissue has to be deeply excised.
Nothing to worry. Do post additional queries.
Wish you good health