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

Physical findings in someone with itching may include:

• Hives:
• Children
• Adults
• Facial swelling
• Mouth or tongue swelling
• Red eyes
• Runny nose
• Increased eye tearing
• Wheezing

Tests may be required to determine the cause of itching.

Tests that may be used to evaluate itching include:

• Complete blood count
• Kidney profile
• Liver profile
• Serum immunoglobulins
• Eosinophil count
• Neck x-ray
• Allergy skin testing
• Skin biopsy