What causes red marks on skin and itch?

Red marks on the skin that itch can have various causes. Here are some common conditions and their associated symptoms:

1. Insect Bites/Stings:

- Small, red, itchy bumps on the skin

- Commonly caused by mosquitoes, fleas, bees, wasps, or spiders.

- The reaction may include localized swelling and pain.

2. Allergic Reactions (Contact Dermatitis):

- Itchy red patches or hives on the skin

- Caused by contact with allergens like poison ivy/oak, certain metals (e.g., nickel), fragrances, or chemicals in cosmetics.

3. Eczema (Atopic Dermatitis):

- Dry, red, itchy patches of skin

- Usually affects the face, neck, inner elbows, and knees.

- Often associated with a personal or family history of allergies.

4. Psoriasis:

- Red, scaly patches on the skin

- Typically appears on the elbows, knees, scalp, and lower back.

- Skin lesions can be itchy or painful.

5. Hives (Urticaria):

- Raised, red, itchy welts on the skin

- Can be caused by allergies, certain foods (e.g., nuts, shellfish), medications, or stress.

- Often resolves within 24 hours.

6. Scabies:

- Intensely itchy red bumps or burrows on the skin

- Caused by tiny mites that burrow under the skin

- Itching is usually worse at night.

7. Fungal Infections (e.g., Ringworm):

- Circular red, itchy patches with raised borders

- Commonly seen on the scalp, body, or feet

- May be accompanied by scaling or flaking.

8. Chickenpox:

- Itchy red blisters that break and crust over

- Usually accompanied by fever, headache, and fatigue

- Highly contagious disease, especially among children.

9. Measles:

- Red, itchy rash that starts on the face and spreads to the rest of the body.

- Accompanied by fever, cough, and runny nose.

- Highly contagious disease spread through respiratory droplets.

If you experience persistent red marks on your skin that itch, it's best to consult a healthcare provider for proper diagnosis and treatment. They can assess your symptoms, rule out underlying conditions, and recommend appropriate medications or remedies to relieve itching and address the cause. Self-treating without proper medical advice may delay healing or worsen the condition.