Summer Acne: Sudden Breakouts on Shoulders and Chest - Dermatology

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In the summer, a patch of acne suddenly appeared on my shoulders and chest?


Recently, on July 15th, I suddenly developed a patch of pimples on my right shoulder (there are also some on the upper part of my arm, estimated to be over 100).
Below the clavicle, there are 2-3 on the left shoulder, which is otherwise unaffected.
The pimples are red, and a few have a white center.
They do not itch unless specifically touched.
Is this some kind of infectious disease? I usually see a doctor who has mentioned that it is a matter of constitution and prescribed medication that has been effective.
They also say that I tend to break out in pimples during the summer.

A, 30~39 year old female. Ask Date: 2023/07/19

Dr. Li Yufen reply Dermatology


Hello: Taiwan's island climate is relatively warm and humid, which can lead to increased sweating and oiliness of the skin during the summer.
This may result in bacterial folliculitis or Malassezia folliculitis.
It is recommended to keep the skin dry and breathable as much as possible, and to shower and change clothes promptly after sweating.
If skin symptoms do not improve or worsen, it is advisable to consult a nearby dermatologist for diagnosis and treatment.
Thank you!

Reply Date: 2023/07/19

More Info


Summer acne, particularly sudden breakouts on the shoulders and chest, can be a frustrating and uncomfortable experience. Your description of the condition, with red pimples and some containing white heads, suggests that you may be dealing with a form of acne vulgaris or folliculitis rather than a contagious disease.
Acne is a common skin condition that occurs when hair follicles become clogged with oil and dead skin cells. In summer, several factors can exacerbate acne, including increased heat, humidity, sweating, and the use of heavier skincare products or sunscreens that may not be non-comedogenic (non-pore clogging). The warm weather can lead to increased oil production in the skin, which can contribute to the formation of acne.

The fact that you have a significant number of pimples on your right shoulder and upper chest area, while your left shoulder remains unaffected, could indicate localized irritation or a reaction to something specific, such as clothing materials, laundry detergents, or even friction from backpacks or sports equipment. It’s also worth considering if you have changed any products in your skincare or laundry routine recently, as this can sometimes trigger breakouts.

While your doctor has mentioned that your condition may be related to your skin type, it’s essential to take a comprehensive approach to managing summer acne. Here are some recommendations that might help alleviate your symptoms:
1. Maintain Cleanliness: Shower regularly, especially after sweating or exercising. Use a gentle cleanser that is suitable for acne-prone skin to help remove excess oil and dirt.

2. Avoid Heavy Products: Opt for lightweight, non-comedogenic moisturizers and sunscreens. Look for products labeled as "oil-free" or "non-acnegenic" to prevent clogging your pores.

3. Exfoliation: Regular exfoliation can help remove dead skin cells that contribute to clogged pores. However, be cautious not to over-exfoliate, as this can irritate the skin and worsen acne.

4. Wear Breathable Fabrics: Choose loose-fitting, breathable clothing made from natural fibers to reduce friction and allow your skin to breathe, especially in hot weather.

5. Stay Hydrated: Drinking plenty of water can help maintain your skin's hydration and overall health, which may reduce the severity of breakouts.

6. Dietary Considerations: Some studies suggest that high-glycemic foods and dairy products may exacerbate acne in some individuals. Consider monitoring your diet and see if reducing these foods helps improve your skin condition.

7. Consult a Dermatologist: If your acne persists or worsens, it may be beneficial to consult a dermatologist. They can provide tailored advice and may prescribe topical or oral medications to help manage your acne effectively.

8. Avoid Picking or Squeezing: It can be tempting to pick at acne, but this can lead to scarring and further inflammation. Try to keep your hands off your face and affected areas.

In summary, while summer acne can be a common issue due to various environmental factors, it is generally manageable with proper skincare and lifestyle adjustments. If you notice any unusual symptoms or if the condition does not improve with self-care, seeking professional medical advice is always a good step.

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