White Pityriasis: Causes, Treatments, and Skin Care Tips

Pityriasis alba with hypopigmentation?

Hello, I have been struggling with persistent sweat stains under my armpits.
I consulted a doctor who prescribed oral medication and topical steroids.
Initially, I had red patches that were quite uncomfortable, but after taking the medication, the red patches disappeared.
However, they turned into a deep brown color.
This deep brown area has been on my body for several years and does not fade; sometimes it peels, and sometimes it doesn’t.
Why is this happening? Has it been treated effectively?
Additionally, I have a large white area on my back that is very dry.
The doctor said it is tinea versicolor, which causes loss of pigmentation, resulting in a mixed appearance of black and white patches.
He advised me to apply lotion on the dry upper back and to use glycolic acid lotion on the areas with pigmentation loss, followed by regular lotion.
Is it safe to apply glycolic acid lotion on the areas with pigmentation loss? What effects can I expect? The large white area on my back is very dry, and I am unsure if it is just dry skin or if it is entirely affected by tinea versicolor (only the lower back has the mixed black and white patches, while the upper back appears different in color and is dry).

nancy, 20~29 year old female. Ask Date: 2011/09/23

Dr. Li Yufen reply Dermatology

Hello, thank you for your inquiry.
In response to your question: if there is still scaling, it may indicate a recurrence of the lesion, and further medication treatment may be necessary.
Regarding the area on your back, it would be advisable to visit a clinic for an examination, as white sugar spots are a condition that typically improves gradually.
Thank you, and I wish you peace and happiness!

Reply Date: 2011/09/23

More Info

Understanding skin conditions such as white pityriasis, or pityriasis alba, can be quite complex, especially when combined with other skin issues like hyperpigmentation and dryness. Based on your description, it seems you are dealing with multiple skin concerns, including a long-standing issue with dark patches in your armpits and a large area of white skin on your back.

White Pityriasis (Pityriasis Alba)
Pityriasis alba is a common skin condition that primarily affects children and young adults. It is characterized by light-colored patches on the skin, often appearing on the face, arms, and upper body. The exact cause of pityriasis alba is not well understood, but it is believed to be related to dry skin and possibly a mild form of eczema. The patches are usually not itchy and may become more noticeable after sun exposure due to the contrast with tanned skin.

Causes and Treatments
1. Causes: The condition is often associated with dry skin and can be exacerbated by environmental factors such as sun exposure, harsh soaps, and skin irritants. It is not contagious and is not caused by an infection.

2. Treatment: Treatment typically focuses on moisturizing the skin and protecting it from further irritation. Your doctor’s recommendation to apply a moisturizer on the affected areas is appropriate. In some cases, topical steroids may be prescribed to reduce inflammation, but they should be used cautiously, especially on sensitive areas.

3. Skin Care Tips:
- Moisturization: Regularly apply a good moisturizer to keep the skin hydrated. Look for products that contain ceramides or hyaluronic acid.

- Sun Protection: Use sunscreen on exposed areas to prevent further discoloration and protect against UV damage.

- Gentle Cleansing: Use mild, fragrance-free cleansers to avoid irritation.

Hyperpigmentation and Dark Patches
The dark patches you mentioned in your armpits could be a result of post-inflammatory hyperpigmentation, which can occur after skin irritation or inflammation. This is common in areas that experience friction or sweating.
1. Treatment:
- Topical Treatments: Your doctor may prescribe topical treatments that can help lighten these dark patches, such as hydroquinone or retinoids. However, these should be used under medical supervision.

- Avoid Irritants: Ensure that you are using gentle, non-irritating products in your armpits to prevent further darkening.

Concerns About the White Area on Your Back
The large white area on your back, described as dry and possibly related to pityriasis alba, may require careful evaluation. If your doctor has diagnosed it as a form of pityriasis alba, the treatment approach would be similar to what has been discussed.

1. Use of Glycolic Acid: Applying glycolic acid (a type of alpha hydroxy acid) can help exfoliate the skin and may improve the texture and appearance of the affected area. However, it can also cause irritation, especially on sensitive or already dry skin. It’s essential to follow your doctor’s advice regarding the application of glycolic acid, particularly on areas with pigment loss.

2. Monitoring Changes: Keep an eye on the affected areas. If you notice any changes in color, texture, or if the patches become itchy or inflamed, it’s crucial to return to your dermatologist for further evaluation.

Conclusion
In summary, managing skin conditions like pityriasis alba and hyperpigmentation requires a multifaceted approach that includes proper skin care, moisturizing, and possibly medical treatments. It’s essential to maintain open communication with your healthcare provider about your symptoms and treatment progress. If you have any concerns about the effectiveness of your current treatment or if your condition worsens, don’t hesitate to seek a second opinion or revisit your dermatologist for further guidance.

Similar Q&A

Understanding White Spots on Skin: Causes and Concerns

I noticed small white spots appearing on my face one day when I looked in the mirror. The spots are not large, and I didn't think much of it, so I didn't seek medical attention. Fortunately, these white spots haven't shown any signs of enlarging! However, I also ha...

Dr. Jin Lianchun reply Dermatology
Dr. Jin Lian-Chun from Pingtung Hospital's Dermatology Department responds: Hello, Miss. Based on your description, there are several possible diagnoses: (1) Tinea Versicolor: a fungal infection that requires treatment with oral or topical medications for a period of time. (...

Understanding Uneven Skin Tone: Causes and Affordable Solutions

Doctor, may I ask why I have white patches on my face? It feels like my skin tone is uneven. Are there any more affordable methods to address this? What should I do? I'm quite troubled.

Dr. Jin Lianchun reply Dermatology
Dr. Jin Lian-Chun from Pingtung Hospital's Dermatology Department responds: Hello, miss. Based on your description, the most likely diagnosis is Pityriasis Alba, commonly known as white spots. This condition is generally due to your skin being more sensitive to ultraviolet (...

Effective Treatments for White Spots on the Face: Beyond Topical Medications

There are white spots on the nose, and applying medication has been ineffective. Are there any other methods for improvement?

Dr. Jin Lianchun reply Dermatology
Hello, Miss: The white patches on your face could possibly be 1. vitiligo 2. tinea 3. pityriasis alba 4. hypopigmented nevi. If you have already visited a dermatologist and confirmed it is vitiligo, there are several treatment options: 1. oral medication combined with topical tre...

Understanding White Spots on Eyelids: Causes, Treatment, and Genetics

Dr. Jin, I have noticeable white patches on my double eyelids (which have become more prominent recently), and there are also two patches of skin on my hips (which have appeared in the last one to two years). Additionally, I have had patches below my knees since childhood, but th...

Dr. Jin Lianchun reply Dermatology
Hello, sir: Vitiligo is not a hereditary disease; however, individuals with vitiligo have a higher likelihood of their children developing the condition compared to the general population. 2. If you wish to pursue treatment, it typically requires a long duration and a commitment ...