Rubella (German measles) is a contagious disease caused by the rubella virus. Symptoms usually appear two to three weeks after exposure to the virus and are generally mild. The most distinctive feature is a characteristic red rash that begins on the face and then spreads to the body. This rash can be one of the first symptoms observed in children.

Other common rubella symptoms may include:
* Mild fever: Typically ranges between 37-38°C and may last for one to two days.
* Sore throat: Often a self-resolving symptom.
* Headache: Pain may spread from behind the ears to the neck area.
* Cough: A symptom that can be observed, especially in children.
* Runny nose: A frequently encountered upper respiratory symptom.
* Swollen and tender lymph nodes: Swelling and tenderness in the lymph nodes of the neck and behind the ears can persist for up to a week.
* Joint pain: May be more pronounced, especially in adult women.
* Conjunctivitis: Redness in the eyes.
* Fatigue.

Exposure to the rubella virus during pregnancy can lead to serious complications such as miscarriage or severe birth defects.