In daily life, you will see red bumps and hard bumps on your baby’s legs, what is going on? Here is an analysis of the causes. 1, may be allergic dermatitis, is caused by allergic factors to stimulate the skin caused by the body’s immune regulation disorder caused by skin inflammatory reaction. Such as papular urticaria, may be an allergic reaction to the skin caused by insect bites. 2, may be the tide poison bumps, environmental humidity caused by the child’s metabolism is faster, he is more sweaty than we adults, so you should often give it a bath to change clothes, usually wear cotton breathable clothes, you can use honeysuckle boiled water to give the child a rub, keep her skin dry, should soon be good. 3, may be a viral infection caused by herpes. It is advisable to take your child to the hospital for examination and use the right medication to regulate the condition. 4. It may be a boil, mainly caused by bacterial infection, which can cause long red bags and pus. You can rub your baby with Bactrim ointment and take amoxicillin granules. Pay attention to the hygiene of the affected area and don’t scratch the affected area with your hands to avoid infection.