You have 2 big red spots on your arm and its very painful it appeared over night what could be should you do?

What it could be:

- Insect bite or sting: If the spots are accompanied by itching, swelling, and pain, they may be the result of an insect bite or sting. Common culprits include mosquitoes, bees, wasps, and spiders.

- Allergic reaction: If you have recently come into contact with an allergen, such as certain foods, plants, or medications, you may experience an allergic reaction that can cause red, itchy spots on the skin.

- Skin infection: A bacterial or fungal skin infection can also cause red, painful spots on the arm. These infections can occur due to cuts, abrasions, or other breaks in the skin.

- Shingles: Shingles is a viral infection that causes a painful rash, typically on one side of the body. The rash may start as small, red spots that eventually turn into blisters.

- Other medical conditions: In rare cases, red spots on the arm may be a sign of a more serious medical condition, such as vasculitis (inflammation of the blood vessels), lupus, or certain types of cancer.

What you should do:

1. Clean the area: Gently clean the affected area with mild soap and water to remove any dirt or debris.

2. Apply a cold compress: Applying a cold compress to the spots can help reduce pain and swelling.

3. Take an over-the-counter pain reliever: If the pain is severe, you can take an over-the-counter pain reliever such as ibuprofen or acetaminophen.

4. Avoid scratching: Scratching the spots can worsen the pain and increase the risk of infection.

5. Monitor the spots: Keep an eye on the spots and monitor for any changes in size, color, or pain.

6. See a doctor: If the spots do not improve within a few days or if you are experiencing any other concerning symptoms, it's important to see a doctor for evaluation and treatment.

7. If symptoms become severe: Seek immediate medical attention if you experience any new or worsening symptoms such as increasing pain, fever, dizziness, or shortness of breath.