Leg rashes are a common occurrence in children, as they are exposed to a variety of viruses and topical irritants. Such exposure also increases as children start school and venture out in public more often with age. There are variety of rashes that are caused from foods, chemicals, allergens and viruses. However, according to AskDrSears.com, the majority of rashes don't require emergency medical attention -- although you will likely need to schedule an appointment for a persistent condition. Always call your doctor first before attempting to administer treatment for a leg rash yourself.
Eczema
Eczema is classified as itchy red patches. Both children and adults often experience the rash on the backs of the knees, although it can occur almost anywhere else on the body. Eczema is the body's reaction to an allergen or skin irritant. In severe cases, the leg rash will continue long after your child is no longer exposed to the cause. AskDrSears.com explains that the most common treatment for eczema in children is through over-the-counter hydrocortisone cream, 1 percent. Severe eczema might be treated with a stronger prescription version, or even a steroid cream. Seborrheic dermatitis is common in infants, a condition also known as "cradle cap."
Hives
Hives are welts that spread quickly across a child's body. Hives usually start on the trunk, but they can rapidly transfer to your child's legs. These raised red bumps are an allergic reaction to topical irritants, such as scented soaps and clothing. Grass is a common culprit of hives on the legs, especially during the late summer and fall months when pollen levels are high. Hives can also occur from certain medications and food allergies. Hydrocortisone cream can help relieve any itchiness associated with this rash. Emergency medical attention is required if breathing difficulties are associated with hives.
Illnesses
Some types of viruses can also cause a rash on the legs of a child. Chicken pox is the most common of these, and the rash looks similar to insect bites at the beginning. Fifth disease, or human parovirus B19, is contagious through respiratory secretions. According to Medline Plus, the rash starts off in a child as flushed cheeks, but quickly gives way to a rash that spreads to the legs and arms. Fifth's disease can last up to two weeks. The common cold can also cause a temporary rash as your child recovers.
Prevention/Solution
Any leg rash that is accompanied with a fever should be treated with a physician immediately. AskDrSears.com states that you may not need to have a temporary rash evaluated if it doesn't bother your child. In other cases, rashes that last for several weeks generally require a pediatric visit for a diagnosis. If allergens are a direct cause of your child's rash, take preventive measures immediately to avoid the onset of future recurrences.
