Is rash on my stomach and back reaction to pneumonia or flu shot?

Hi.

Both pneumonia and flu shots can have side effects, including localized pain, redness, or swelling at the injection site. Systemic reactions like a mild rash can also occur, but they are less common.

While rare, vaccines can sometimes trigger allergic reactions. Mild allergic reactions might include symptoms like a rash, but they can also escalate. If you experience symptoms like difficulty breathing, swelling of the face or throat, a fast heartbeat, dizziness, or weakness, these are signs of a more severe reaction and require immediate medical attention.

Benadryl (diphenhydramine) is an antihistamine commonly used to treat allergic reactions, including rashes. It can be effective in reducing itching and rash. However, before taking it, consider a few factors:

• Severity and Spread of the Rash: If the rash is mild and not spreading, you might try Benadryl to see if it helps alleviate the symptoms.
• Other Symptoms: If you have other symptoms besides the rash, especially those suggesting a severe allergic reaction, seek medical attention instead of self-medicating.

Keep an eye on the rash and any other symptoms you might experience. If you decide to take Benadryl, follow the dosage instructions and be aware of its side effects, such as drowsiness.