Why do tabs make you itch

For example, people who experience stomach discomfort after taking aspirin a common adverse reaction often say they are Usually the reaction is to a drug taken by mouth or by injection.

The drug does not have to be applied to the skin to cause a drug rash. When the immune system comes into contact with a drug, it can become sensitive to that drug a process called sensitization. Sometimes a person becomes sensitized to a drug after only one exposure, and other times sensitization occurs only after many exposures. Once a person is sensitized to a drug, later exposure to that drug triggers an allergic reaction, such as a rash.

Sometimes a rash develops directly without involving an allergic reaction. For example, corticosteroids and lithium may cause a rash that looks like acne, and anticoagulants blood thinners may cause bruising when blood leaks under the skin. Certain drugs make the skin particularly sensitive to the effects of sunlight or other sources of ultraviolet light photosensitivity Photosensitivity Reactions Photosensitivity, sometimes referred to as a sun allergy, is an immune system reaction that is triggered by sunlight.

Sunlight can trigger immune system reactions. People develop itchy eruptions These drugs include certain antipsychotics, tetracyclines, sulfa antibiotics, hydrochlorothiazide , and nonsteroidal anti-inflammatory drugs NSAIDs.

No rash appears when the drug is taken, but later exposure to the sun while taking the drug can cause photosensitivity. Other rashes that result from drugs are those that occur in Stevens-Johnson syndrome Stevens-Johnson Syndrome SJS and Toxic Epidermal Necrolysis TEN Stevens-Johnson syndrome and toxic epidermal necrolysis are two forms of the same life-threatening skin disease that cause rash, skin peeling, and sores on the mucous membranes.

See also Introduction Drug rashes vary in severity from mild redness with tiny bumps over a small area to peeling of the entire skin. Rashes may appear suddenly within minutes after a person takes a drug, or they may be delayed for hours, days, or even weeks. Rashes may cause red, purple, blue, or gray discoloration. Some rashes are painful and may cause sores to form in the mouth. See Subscription Options. Go Paperless with Digital. This article was published in print as "Defeating Pain without the Itch.

Get smart. Sign up for our email newsletter. Sign Up. Sometimes hives cause swelling in deeper layers of the skin. This is called angioedema. It may lead to severe swelling in the lips, face, eyelids, genitalia, or hands. Often, angioedema occurs at the same time as hives. In rare instances, angioedema causes swelling in the throat and airway and may restrict breathing and swallowing.

If you develop these symptoms, our doctors recommend seeking medical attention at the nearest emergency room. Morbilliform drug eruption, or reaction, is a skin rash that develops after exposure to certain medications, usually antibiotics like penicillin or cephalosporin. A morbilliform rash is composed of flat pink or red spots that may merge or become raised as the rash spreads.

A morbilliform rash often appears on the chest and back first. It then spreads to the arms, neck, and, finally, the legs.

Sometimes the rash is itchy, and you may develop a mild fever. A morbilliform rash may not appear for one or two weeks after starting a new medication. If the rash occurs, the medication should be stopped as soon as possible.

The rash may persist for several days to weeks after you discontinue the medication, then it fades. Usually, the rash disappears from the top of the body first and the legs and feet last. The skin may peel, like a sunburn, as it heals. A drug reaction with eosinophilia and systemic symptoms is a rare but serious condition that affects the skin as well as internal organs, such as the liver, lungs, kidneys, and heart.

You and your doctor should monitor certain health issues. This can help make sure you stay safe while you take this drug. These issues include:. If you have repeat kidney stones, your doctor may tell you to eat a special diet.

This diet will be low in animal protein meat , sodium, sugar, and oxalate-rich foods such as, spinach, beets, celery, and green beans. Your diet should also be high in fiber, and you should drink plenty of water.

You may also need to watch your calcium intake. There are other drugs available to treat your condition. Some may be better suited for you than others.

Talk with your doctor about other drug options that may work for you. Disclaimer: Healthline has made every effort to make certain that all information is factually correct, comprehensive, and up-to-date. However, this article should not be used as a substitute for the knowledge and expertise of a licensed healthcare professional.

You should always consult your doctor or other healthcare professional before taking any medication. The drug information contained herein is subject to change and is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. The absence of warnings or other information for a given drug does not indicate that the drug or drug combination is safe, effective, or appropriate for all patients or all specific uses.

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