What kind of disease is it when a child has dense bumps on his body?

Children with dense small bumps on the body may be measles, urticaria, scarlet fever and so on.
1. Measles: acute onset, persistent high fever, hot face, fever for about three days began to appear all top-down rash, protruding from the surface of the skin, dense distribution, the skin between the rash is normal.
2. Urticaria: it is an itchy rash with different degree of itchiness, severe cases can be accompanied by fever.
3. Scarlet fever: caused by streptococcal infection, usually accompanied by purulent tonsillitis and high fever. The rash is centripetally distributed and the skin between the rashes is scarlet in color.
Dense bumps on the child’s body may also be toddler emergency rash, rubella, etc., need to seek medical attention as soon as possible to identify the cause.