What are the little itchy red bumps on your arm?

The little itchy red bumps on your arm could be caused by a variety of things, including:

1) Insect bites: Insect bites, such as those from mosquitoes, fleas, and bedbugs, can cause small, red, itchy bumps on the skin. These bumps typically appear in clusters and can be accompanied by swelling and discomfort.

2) Allergic reactions: Allergic reactions can also cause red, itchy bumps on the skin. These bumps can be triggered by a variety of substances, including foods (such as nuts, milk, and eggs), pollen, pet dander, and certain medications.

3) Skin conditions: Certain skin conditions, such as eczema, psoriasis, and hives, can also cause red, itchy bumps on the skin. These bumps can be accompanied by other symptoms, such as dryness, flaking, and inflammation.

4) Bacterial infections: Bacterial infections, such as impetigo and cellulitis, can also cause red, itchy bumps on the skin. These bumps are typically accompanied by other symptoms, such as pain, swelling, and oozing.

5) Viral infections: Viral infections, such as chickenpox and measles, can also cause red, itchy bumps on the skin. These bumps are typically accompanied by other symptoms, such as fever, fatigue, and headache.

If you are experiencing little itchy red bumps on your arm, it is important to see a doctor to determine the cause and receive appropriate treatment. The doctor may perform a physical examination, review your medical history, and order tests, such as a blood test or skin biopsy, to help diagnose the condition.