Sudden appearance
👉 Allergies vary from mild to more serious, depending on the trigger.
🩸 4. Petechiae (Tiny Blood Spots Under the Skin)
Another possible cause is:
Petechiae
These appear as:
- Tiny red or purple dots
- Flat, not raised
- Do not fade when pressed
🧠 Possible causes:
- Physical strain (like coughing or lifting)
- Certain infections
- Low platelet levels (in some cases)
👉 If widespread or unexplained, medical evaluation is important.
☀️ 5. Sun Exposure or Skin Sensitivity
Too much sun exposure can also trigger:
- Red patches
- Skin irritation
- Inflammation
People with sensitive skin may react more strongly.
🧠 6. Minor Skin Irritation or Injury
Sometimes red spots are simply caused by:
- Scratching
- Insect bites 🐜
- Friction from clothing
These are usually temporary and harmless.
⚠️ When You Should Pay Attention