Hello and welcome to Healthcare Magic. Thanks for your query.
Without a detailed history and evaluation, it is difficult to say what the boils are due to. It could be due to a dermatological problem or due to a systemic problem which is decreasing her immunity. It is also possible that she is still using the drug through "skin popping" which could be the cause for her recurrent boils
Since, she is having multiple medical problems, I would suggest that you take her for regular check ups and periodic follow ups. Proper compliance to treatment and abstinence from drugs is essential for good recovery.
Wish you all the best.
Dr. Jonas Sundarakumar