Diagnosis of Keratosis Pilaris
The diagnosis of keratosis pilaris is very straightforward and based on a typical skin appearance in areas like the upper arms. A family history of keratosis pilaris is also very helpful since there is a strong genetic component to the condition. The diagnosis is confirmed by the physician's clinical exam.
Are there any lab tests to help diagnose keratosis pilaris?
Since the appearance of keratosis pilaris is easily recognized, specific laboratory tests are not needed for the diagnosis. Skin biopsy (surgically taking a small piece of skin using local numbing medicine) may be useful in atypical or widespread cases.