3 months baby face rash rough with flakes may be caused by dry eczema, allergic dermatitis, etc., you can take general treatment, medication and other ways to relieve the symptoms. If it is caused by dry eczema, you need to keep the local skin clean, good moisturizing work, more can be slowly scabbed over. In addition, if you are breastfeeding, the mother should pay attention to their diet, avoid spicy and greasy, and if the symptoms are serious, you need to consult a doctor in a timely manner, under the guidance of the doctor can be used as a topical dandrol ointment and other treatments. When allergic dermatitis occurs, if the baby is breastfed, the mother needs to pay attention to their diet, avoid spicy greasy and other foods that may be allergic to, away from allergic factors, if necessary, under the guidance of the doctor to use a weak hormone ointment, such as Dinaid cream and other drugs for treatment, and at the same time to keep the baby’s skin clean. 3 months baby face rash rough with flakes may also have other reasons, 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.