Babies start exploring their surroundings very soon and this may cause them to experience a few knocks and bumps. This is nothing to worry about and in most cases, bruises heal on their own. Babies and very young children may manifest more prominent bruises because their skin is thinner.
Older babies who are more active may have an occasional fall or may bump into things while moving around. Minor babies bruises usually occur when they are exploring. Babies that are just learning to crawl or walk are bound to end up with some bruises now and then. In case your baby is in daycare or a playgroup, then some bruises may be the result of interaction with other kids. It is a good idea to watch your child when he is among children, to ensure that he is not being bullied.
A bruise develops when the tiny blood vessels just beneath the skin's surface suffer an impact and rupture. This causes the blood to seep into the skin and a bluish-purple mark develops. As the body starts absorbing the blood again, it becomes greenish-yellow. Bruises are not usually painful and heal quickly in a week or two.
If there is no tear in the skin, a bandage is not required. You can alleviate the swelling through an ice pack. You can put some ice cubes in a plastic bag or even use a pack of frozen peas. Place the ice compress over the affected area for about 15 minutes each time and do this several times a day during the first couple of days. It is important to place your ice pack in a washcloth before placing it on your child's skin. Keep it in place while you distract your child by feeding him or reading to him. In case your child is experiencing pain due to the bruise, then it is better to consult your pediatrician. You may be asked to administer a dose of pain-relieving medication to your child. This may help to reduce swelling and pain, but the bruising may still persist for some more time.
There is no specific diet for bruises, other than healthy, nutritious foods. If you suspect that your child has a vitamin deficiency, then it is advisable to consult your pediatrician.