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Nov 5
4 min

Hair Dye Allergy From PPDA (para-phenylenediamine): How to Avoid It and What to Use Instead

What is PPDA? PPDA is a chemical, and it's the main coloring agent in hair dyes. The chemical name is para-phenylenediamine. The che...

Allergic reactions to lip balms and chapsticks such as Burt's Bees, Eos, Blistex, Carmex, and others

Rajani Katta MD

Mar 3
8 min

Allergic reactions to lip balms and chapsticks such as Burt's Bees, Eos, Blistex, Carmex, and others

Lip balms and chapsticks from Burt's Bees, Eos, Blistex, Carmex, Chapstick, and others may trigger allergic skin reactions of the lips.

Allergic Skin Reactions to Natural Deodorants Such as Tom's of Maine, Schmidt's, and More

Rajani Katta

Feb 20
2 min

Allergic Skin Reactions to Natural Deodorants Such as Tom's of Maine, Schmidt's, and More

Allergic skin reactions may occur after using natural deodorants such as Tom's of Maine or Schmidt's, due to natural fragrance additives.

Allergic skin reactions in the underarm and armpit area: deodorants and other triggers

Rajani Katta MD

Nov 15, 2018
4 min

Allergic skin reactions in the underarm and armpit area: deodorants and other triggers

Allergic skin reactions of the underarm and armpit can be triggered by deodorants, skin care products, clothing dyes, and other substances.

If You Are Allergic to Nickel, Try This Kind of Jewelry

Rajani Katta MD

Mar 27, 2018
5 min

If You Are Allergic to Nickel, Try This Kind of Jewelry

Many people develop rashes after wearing costume jewelry or other types of jewelry. In one of the most common scenarios, wearing certain ear

Shoe Allergy and Rashes on the Feet: What You Need to Know

Rajani Katta MD

Mar 20, 2018
5 min

Shoe Allergy and Rashes on the Feet: What You Need to Know

If you have a rash on the top of your feet or toes, one possible cause is shoe allergy. Different components of shoes can trigger allergic r

Allergy to Fragrance: Understanding Fragrance Additives and Choosing Products

Rajani Katta MD

Sep 11, 2017
3 min

Allergy to Fragrance: Understanding Fragrance Additives and Choosing Products

If you're allergic to fragrance, it can be very hard to avoid. There are hundreds of fragrance additives, and they're found in the v

Warning: "Fragrance-Free" Products May In Fact Contain Fragrance Additives

Rajani Katta MD

Sep 11, 2017
4 min

Warning: "Fragrance-Free" Products May In Fact Contain Fragrance Additives

Many products that are labeled as "fragrance-free" may legally contain fragrance additives. This is due to a loophole in the label

Allergic Skin Reactions on the Job: Occupational Allergic Contact Dermatitis

Rajani Katta

Sep 2, 2017
4 min

Allergic Skin Reactions on the Job: Occupational Allergic Contact Dermatitis

I've been performing patch testing for close to 20 years, and during that time I've seen many cases of allergies related to the workplace...

Rajani Katta

Sep 2, 2017
5 min

Allergic Skin Reactions in Athletes

Can you be allergic to work? Well, you can certainly be allergic to some of the tools or equipment or other exposures in your workplace. ...

Red eyelids: tips for facial and eyelid contact dermatitis

Rajani Katta MD

Jul 26, 2017
5 min

Red eyelids: tips for facial and eyelid contact dermatitis

Red, itchy eyelids may be due to allergic contact dermatitis. This allergic skin reaction can be due to cosmetics, hair care, and others.

Rajani Katta MD

Jun 26, 2017
5 min

Allergic Skin Reactions on the Job: Occupational Allergic Contact Dermatitis

Occupational allergic contact dermatitis can occur in many different jobs.This type of allergic reaction can be triggered by different equip

Rajani Katta MD

Feb 24, 2017
3 min

What causes chapped lips?

Chapped lips are a common complaint during winter. With the dry air in our homes and the cold temperatures outside, our lips can suffer. ...

The Monday morning beauty hangover: allergic reactions to manicures, shellac nails, and hair dye

Rajani Katta MD

Jan 7, 2017
4 min

The Monday morning beauty hangover: allergic reactions to manicures, shellac nails, and hair dye

I call it the Monday morning beauty hangover. And it's the last thing you'd expect. You head into the beauty salon on Saturday for a high...

This is why I don't recommend "natural" skin care products

Rajani Katta MD

Jul 7, 2016
4 min

This is why I don't recommend "natural" skin care products

I've noticed a definite trend in the last five years. More and more of my patients with sensitive skin and eczema are reporting that they...

Does your wedding ring make you itch? It might be a nickel allergy, and here's what you can do.

Rajani Katta MD

Apr 27, 2016
4 min

Does your wedding ring make you itch? It might be a nickel allergy, and here's what you can do.

Even wedding rings can trigger allergic reactions When you start to develop a red, itchy patch right underneath your wedding ring, it's n...

Do You Color Your Hair? This Is What You Need To Know About Hair Dye Allergy.

Rajani Katta MD

Mar 30, 2016
3 min

Do You Color Your Hair? This Is What You Need To Know About Hair Dye Allergy.

I'm seeing more and more patients who've become allergic to their hair dye. Many of these patients haven't been able to identify the trig...

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Hair Dye Allergy From PPDA (para-phenylenediamine): How to Avoid It and What to Use Instead

Allergic reactions to lip balms and chapsticks such as Burt's Bees, Eos, Blistex, Carmex, and others

Allergic Skin Reactions to Natural Deodorants Such as Tom's of Maine, Schmidt's, and More

Allergic skin reactions in the underarm and armpit area: deodorants and other triggers

If You Are Allergic to Nickel, Try This Kind of Jewelry

Shoe Allergy and Rashes on the Feet: What You Need to Know

Allergy to Fragrance: Understanding Fragrance Additives and Choosing Products

Warning: "Fragrance-Free" Products May In Fact Contain Fragrance Additives

Allergic Skin Reactions on the Job: Occupational Allergic Contact Dermatitis

Allergic Skin Reactions in Athletes

Red eyelids: tips for facial and eyelid contact dermatitis

Allergic Skin Reactions on the Job: Occupational Allergic Contact Dermatitis

What causes chapped lips?

The Monday morning beauty hangover: allergic reactions to manicures, shellac nails, and hair dye

This is why I don't recommend "natural" skin care products

Does your wedding ring make you itch? It might be a nickel allergy, and here's what you can do.

Do You Color Your Hair? This Is What You Need To Know About Hair Dye Allergy.

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