HI, thanks for using healthcare magic
This persistent itching can be related to a fungal infection
Dermatitis can occur due to contact with an agent that irritates the skin.
The constant itching can result in a secondary infection.
It may be best to visit your doctor to determine whether the symptoms are related to an infection or dermatitis.
The treatment for a dermatitis would involve avoiding the irritating agent and the use of steroid
A fungal infection would require antifungal treatment.
I hope this helps