The symptoms of a dry patch on the baby’s arm that looks like ringworm are mostly suspected to be caused by fungal infections, infantile eczema and other reasons, which can be handled through daily care and medication. 1. Fungal infection: ringworm is usually caused by fungal infection, the child can be treated with topical antifungal drugs such as acrylamide after diagnosis, such as terbinafine cream. At the same time to keep the child’s local skin clean, wear sweat-absorbent, breathable clothes, change of clothes to be sterilized to avoid secondary infection. 2. Infantile eczema: If the child has pimples, itching and other symptoms, it is suspected to be caused by infantile eczema, if the symptoms are more serious, you can apply tacrolimus ointment and other drugs in the affected area for treatment. At the same time, pay attention to keep the environment around the child dry and hygienic, you can apply some moisturizer to help maintain skin moisture. The baby arm piece of dry like ringworm may also have other causes, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, to give targeted treatment or treatment. The use of medication should follow the doctor’s instructions.