The evaluation of rubella begins with a history and physical examination.

Initial physical findings in someone with rubella may include:

• Fever
• Red eyes
• Runny nose
• Red throat

After several days, these symptoms go away and a rash develops.
Physical findings in someone with a rubella rash include:

• Pink, flat, circular spots that start on the face
• Spreads to the trunk, arms, and legs
• Usually resolves within 4 days

Physical findings in someone with a serious rubella infection include:

• Inflammation of the ear drum:
• Due to otitis media
• Joint pains
• Joint swelling
• Severe headache
• Excessive sleepiness
• Confusion

Tests are not necessary to make the diagnosis of rubella.

Tests that may be used to evaluate rubella include:

• Complete blood count
• Blood serology:
• Antibody tests for rubella virus
• Throat culture or strep screen
• Chest x-ray
• Spinal tap
• Detects encephalitis and meningitis due to rubella