Red spots on the skin: 5 common causes and treatments

Red spots on the skin are a common dermatological condition, causing itching, discomfort, and even significant aesthetic impact. This condition can be a manifestation of various causes, from allergic reactions to signs of certain diseases. This article will help you better understand the condition of red spots, its causes, treatments (treatment for red rash), and effective prevention.

What are red spots on the skin?

Red spots on the skin are a condition characterized by the appearance of spots, patches, or red rashes on the skin, accompanied by itching (itchy red rash), warmth, or changes in skin texture. Depending on the cause, the red spots may appear scattered or clustered, distributed in an area, or spread throughout the body.

Causes of red spots on the skin

There are many causes of “red spots on the skin” below are some of the most common:

Red spots on the skin” due to allergies:

  • Food allergies: seafood, peanuts, eggs, milk, etc., are common food allergens, leading to red rashes on the skin (allergic red rash).
  • Weather allergies: sudden changes in temperature, hot sun are stimulating factors for rashes, hives.
  • Cosmetic allergies, chemicals: some ingredients in skincare products, fabric softeners, detergents, etc., can cause skin irritation.


“Red spots on the skin” due to allergies

  • Skin inflammation:

– Contact dermatitis: occurs when the skin comes into contact with allergens or irritants (red rash due to dermatitis).

– Atopic dermatitis: also known as eczema.


“Red spots on the skin” due to inflammation

  •  “Red spots on the skin” due to infection:

– Viral infection: Measles, rubella, chickenpox, etc., are diseases caused by viruses with symptoms of red rash on the skin.
– Bacterial infection: Some types of bacteria can cause skin inflammation, pimples, red rash.

  • Other diseases: Some autoimmune diseases like lupus erythematosus, or systemic diseases can manifest symptoms on the skin including red spots.
  • “Red spots on the skin” in the form of pimples: Acne types such as acne vulgaris, inflammatory acne,… may also initially manifest as red spots.
  • Heat rash: Appears when the body is too hot, sweating heavily, and the pores are clogged.
  • Insect bites: Bites from ants, mosquitoes, etc., often cause red spots, itching, and discomfort (skin irritation).

Diagnosis of red spots on the skin

To accurately determine the cause of “red spots on the skin” (diagnosis of red rash), dermatologists will:

  • Take a medical history: the time of appearance of red spots, factors exacerbating the condition, accompanying symptoms, etc.
  • Thorough skin examination: observe the characteristics of lesions (shape, color, location, etc.).
  • Supporting tests: blood tests, allergy tests,… in some cases.
    Treatment for red spots on the skin

The treatment of “red spots on the skin”

  • Medications:

Antihistamines (allergy medications).
Corticosteroid creams (in cases of dermatitis – as prescribed by a doctor).
Antibiotics (when there is infection).
Specific treatments for each disease (if any).

  • Skin care:

Gently cleanse the skin with mild, fragrance-free products.
Avoid scratching, rubbing the affected area.
Take cool showers, avoid hot water.
Moisturize the skin regularly.


skin care to treat “red spots on the skin”

Preventive measures

  • Avoid contact with known allergens.
  • Test new cosmetics on a small area of skin before widespread use.
  • Choose clothing made of breathable, sweat-absorbent materials.
  • Maintain personal hygiene and clean living environment.
  • Establish a moderate lifestyle, minimize stress.

When to see a doctor

Visit a dermatologist immediately if you experience the following symptoms:

  • Red spots spread rapidly, persistently worsening.
  • Swollen, oozing, painful red spots.
  • Systemic symptoms: Fever, fatigue, difficulty breathing,…
  • Home treatment measures are ineffective.

Some frequently asked questions about “red spots on the skin”

Here are 5 frequently asked questions related to “red spots on the skin,” along with concise answers, using appropriate entities:

1. Are red spots on the skin allergic reactions?

Answer: Red spots on the skin can be a sign of an allergic reaction (allergic red rash), but they can also be due to many other causes such as dermatitis, infection, heat rash, etc. It is necessary to consult a dermatologist for an accurate diagnosis.

2. My child has red spots and itching, is it dangerous?

Answer: Red spots and itching in children can be due to allergies, atopic dermatitis (eczema), insect bites, diaper rash,… Children’s skin is sensitive, so they are prone to various skin problems. You should take your child to a dermatologist for diagnosis (diagnosis of red rash) and appropriate treatment. Avoid self-administering medication to children as it can be harmful.

3. Are red spots contagious?

Answer: The likelihood of infection depends on the cause of the red spots. Some diseases such as chickenpox, measles are highly contagious viral diseases. However, allergic reactions, contact dermatitis, and other skin inflammations are often not contagious.

4. Do red spots on the skin need to be avoided water?

Answer: Whether to avoid water or not depends on the cause. In some cases of dermatitis, limiting contact with water may help reduce irritation. However, the key is to maintain good personal hygiene, bathe with cool water, and use gentle cleansing products. Consult directly with a dermatologist for appropriate skincare guidance.

5. What medication should I use for red spots?

Answer: Absolutely do not self-administer medication to treat red spots (treatment for red rash), especially corticosteroid-containing drugs. Depending on the cause, the doctor may prescribe antihistamines, antibiotics, corticosteroid creams,… Self-medication can worsen the condition, even causing dangerous side effects.

Note: These are just basic suggestions. Patients should schedule direct appointments with a dermatologist for in-depth, proper advice.

Scientific evidence on “red spots on the skin”:

1. The impact of stress on skin conditions:

Study: “Stress as a modulator of immune function and skin disease: A review of the literature” (2018)
Results: Stress can increase the risk and severity of dermatological conditions such as allergic dermatitis, eczema, acne.

2. The role of diet in controlling skin diseases:

Study: “Diet and acne: A systematic review and meta-analysis of observational studies” (2017)
Results: A diet high in sugar, dairy, and high glycemic index foods may increase the risk and severity of acne.

3. Effectiveness of different treatment methods:

Study: “A systematic review of topical treatments for atopic dermatitis” (2019)
Results: Moisturizing creams, corticosteroid creams, and calcineurin inhibitors are all effective in treating allergic dermatitis.

4. Side effects of medications:

Study: “Cutaneous side effects of medications” (2020)
Results: Some medications can cause side effects such as red rash, itching, and other dermatological issues.

5. The importance of dermatological examination:

Study: “The importance of early diagnosis and treatment of skin diseases” (2019)


Red Spots on Skin: Causes, Symptoms, and Research-Based Treatment Strategies – PharmEasy Blog

Red Spots On Skin: What’s Causing Them? | Vujevich Dermatology (


Kiểm Duyệt Nội Dung

Ban Biên Tập | Website

More than 10 years of marketing communications experience in the medical and health field.

Successfully deployed marketing communication activities, content development and social networking channels for hospital partners, clinics, doctors and medical professionals across the country.

More than 6 years of experience in organizing and producing leading prestigious medical programs in Vietnam, in collaboration with Ho Chi Minh City Television (HTV). Typical programs include Nhật Ký Blouse Trắng, Bác Sĩ Nói Gì, Alo Bác Sĩ Nghe, Nhật Ký Hạnh Phúc, Vui Khỏe Cùng Con, Bác Sỹ Mẹ, v.v.

Comprehensive cooperation with hundreds of hospitals and clinics, thousands of doctors and medical experts to join hands in building a medical content and service platform on the Doctor Network application.

Share this post

Most Viewed Posts
Recent Posts

Related News