Thanks for your query.
Read and understood your concerns about the hair not growing back after the boil is settled.
It is possible that the hair have gone into temporary halt in growth due to the disease process in that part of the scalp. This usually get OK with time.
Do not worry at the moment, the baby is just 20 months. Wait and watch is the best policy at the moment.
If there is no positive growth after 6 months, consult a Trichologist (Skin Specialist working with hair).
Hope this helps you.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.