The evaluation of acne rosacea begins with a history and a physical examination.

Physical findings in those with acne rosacea on the face include:

• Skin redness
• Pimples
• Pustules
• Telangiectasias

Tests are usually not required to make the diagnosis of acne rosacea.

Tests that may be used to evaluate acne rosacea include:

• Skin biopsy
• May be performed in cases where the diagnosis is uncertain.