Poison ivy, fragrances, and medications are some common substances that can cause an allergic reaction rash. The rash may vary in size and severity, depending on its cause. A person can treat most ...

Rashes can happen for many reasons, including skin infections, allergies, and medications. They can also result from bacterial, fungal, viral, or parasitic infections and other diseases.

There are many possible reasons why a rash develops on the neck, including allergies, infections, insect bites, and skin conditions. Knowing what's causing your rash before treating it is important.

How Do I Know What Causes My Rash? It isn’t easy to figure out if your skin problem is caused by irritation or an allergy , if it’s your clothes or the chemicals on them. Some clothes are made ...

DEAR DR. ROACH: About 45 years ago, I came down with a rash on my chest and stomach from taking ampicillin. I was told never to take penicillin again. I’m allergic to many antibiotics, which ...

My sister and father were allergic to penicillin, so I wonder if this tendency is inherited. Supposedly, research shows a change of mind with penicillin allergies, and a past rash is no longer an ...

My sister and father were allergic to penicillin, so I wonder if this tendency is inherited. Supposedly, research shows a change of mind with penicillin allergies, and a past rash is no longer an ...

Dear Dr. Roach: About 45 years ago, I came down with a rash on my chest and stomach from taking ampicillin.I was told never to take penicillin again. I’m allergic to many antibiotics, which ...