Patch Testing

What is Patch Testing?

Patch testing is a process used to assist in detecting contact dermatitis due to an allergic reaction. Patching can identify which substances that one has come in contact with that may be causing a delayed allergic reaction. There are no needles or blood testing involved.

How Does Patch Testing Work?

Patches with allergens are placed in groups on the back. Allergic reactions typically appear within 2 to 4 days after the allergen is applied to the skin, but can take up to a week in some cases. Allergens that are applied to the skin are tailored for each individual and their needs. There are 3 to 4 appointments that must take place. The first appointment includes applying the patches, the second appointment is for removing the patches, and the third appointment is for the readings. Some individuals may need a fourth appointment a week to ten days later for a late reading of results. The test itself is painless and simple.

In your own words

Patient Testimonials

34th & West

I’ve been a patient at Central Austin Derm for many many years, and specifically a patient of Shirien for many of those years. I never feel like she is in a rush, even if she is having a busy day. She explains what she is doing, listens to what concerns me, and is warmly professional.

- C.T.

Bryker Woods

“I’ve been coming to Dr.Cadmus for a little over a year now and before that went to Dr. Farrady. Dr Cadmus is really great! I am always able to get into seeing her quickly and she’s very thorough and great at her profession.”

- M.C.

Anderson Ln.

“Great office location, very professional, provided excellent care. I just wanted to re-establish myself with a new dermatologist since I moved from another state…”

- A.R.

Anderson Ln.

Courtney Scarmado was so helpful, informative, and empathetic. The entire staff were friendly and supportive. I would definitely recommend!

- L.H.

Anderson Ln.

I’m happy to say that Dr. Simi Cadmus and PA Courtney Scamardo are continuing Dr. Katherine Farady’s high standards of care and service. Good dermatologists are hard to find; I strongly recommend this entire practice.

- B.E.

Bryker Woods

This is the only place that I know of that you can be told that you have cancer, and be at peace about it – Courtney Scarmado and staff are that nice. Sounds weird, since getting bad news is never good. They are professional, and know all about skin and its care. Added bonus: after you get your face frozen off, you can walk over to Milk and Cookies and feel so much better!

- L.M.