Drug-induced pruritus

Drug-induced pruritus is a condition characterized by an intense itching sensation caused by certain medications. It is a common side effect of many drugs and can significantly affect a patient's quality of life.

Causes

The exact cause of drug-induced pruritus is not fully understood. It is believed to be caused by the body's reaction to certain medications. Some drugs are known to cause pruritus more frequently than others. These include opioids, antibiotics, chemotherapy drugs, and antimalarial drugs.

Symptoms

The primary symptom of drug-induced pruritus is an intense itching sensation. This can occur anywhere on the body, but is most commonly experienced on the arms, legs, and back. The itching can be constant or intermittent, and can range from mild to severe. In some cases, the itching can be so severe that it interferes with sleep and daily activities.

Diagnosis

Diagnosis of drug-induced pruritus is primarily based on the patient's medical history and the timing of the onset of symptoms. If a patient begins experiencing pruritus shortly after starting a new medication, this is a strong indication that the drug is the cause. In some cases, a skin biopsy may be performed to rule out other potential causes of the itching.

Treatment

The primary treatment for drug-induced pruritus is to discontinue the offending medication, if possible. In some cases, this may not be possible, and other treatments may be necessary. These can include antihistamines, corticosteroids, and phototherapy. In severe cases, a referral to a dermatologist may be necessary.

Prevention

Prevention of drug-induced pruritus primarily involves avoiding medications known to cause this side effect. If a patient has a history of drug-induced pruritus, they should inform their healthcare provider so that alternative medications can be considered.

See also

• Pruritus
• Drug eruption
• Drug hypersensitivity

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