Shingles: Healing Process and Scab Color Concerns - Dermatology

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Is it normal for the scabs from shingles to be very dark? Does the drying of the blisters indicate that healing is progressing?


Hello Doctor, about five or six days ago (around Sunday), I developed small blisters on my chin (at the time, I mistakenly thought they were small pimples and popped them… sweat).
Later, I noticed that they turned into many small blisters, and I realized they were not pimples.
Additionally, I started experiencing severe pain on the right side of my ear and behind it.
Four days ago (Monday), I went to a dermatologist, who diagnosed it as "herpes" and prescribed three days of acyclovir 400mg orally and 5% acyclovir cream topically, along with painkillers and vitamin B complex.
On Thursday (yesterday), I returned for a follow-up, and the doctor noted some inflammation and that more blisters had appeared.
He prescribed another three days of medication, adding dicloxacillin 250mg, and changed the ointment to gentamicin cream.
The doctor mentioned that after this course, he would not prescribe acyclovir again.
Initially, I thought it was simple herpes, as I had experienced it in the past due to fatigue.
However, due to the pain behind my right ear and in my temple, throat pain, fatigue, and the appearance of small clusters of blisters along the right side of my mouth, chin, and near my ear, I feel that this situation seems different (previously, they only appeared on my lips).
It seems like it could be shingles (I had chickenpox as a child), but I’m not entirely sure.
Now, the blisters are gradually drying up and shrinking, with a small black center remaining.
Does this indicate that they are healing? I’m very worried about new blisters appearing, which is quite distressing.
I previously thought some itchy areas were mosquito bites, but after a while, they turned into clusters of small blisters.
Fortunately, I realized something was wrong early on and applied medication, preventing them from growing larger.
Now, whenever I feel itchy on my face, I get very anxious and want to apply medication.
Additionally, the areas I popped have turned into ulcers with a very dark color… after scabbing, they appear purplish-black.
I’m unsure if this will leave long-lasting scars.
I apologize for the lengthy message, and thank you for taking the time to respond.

Xin, 40~49 year old female. Ask Date: 2017/03/24

Dr. Li Yufen reply Dermatology


Hello: For an introduction to shingles, you can refer to the article on the Dermatology Expert Health Network at http://www.drskincare.com.tw/Qa/Detail.aspx?ID=30.
Typically, shingles will not produce new blisters after one week; the old blisters will turn purple and black and form scabs.
Once the scabs fall off naturally, if there are any scars left, it is recommended to apply scar removal gel.
If the skin symptoms do not improve or worsen, it is advisable to consult a nearby dermatologist for diagnosis and treatment at http://www.derma.org.tw/user_finddoctor.php.
Thank you!

Reply Date: 2017/03/24

More Info


Shingles, also known as herpes zoster, is a viral infection caused by the reactivation of the varicella-zoster virus, which is the same virus that causes chickenpox. After a person recovers from chickenpox, the virus remains dormant in the nerve tissues and can reactivate later in life, often due to stress, weakened immune system, or other factors. The symptoms of shingles typically include a painful rash that develops into blisters, which can be quite uncomfortable and may be accompanied by other symptoms such as fever, fatigue, and sensitivity to light.

In your case, the development of small blisters around your chin and the pain radiating to your ear suggest that you may indeed be experiencing shingles. The fact that you have a history of chickenpox supports this possibility. The pain you are experiencing, particularly around the ear, is known as postherpetic neuralgia, which can occur when the virus affects the nerves in that area.

Regarding the healing process, it is common for shingles blisters to go through several stages. Initially, they appear as small, fluid-filled blisters that can be itchy or painful. As the condition progresses, these blisters will eventually dry out and form scabs. The presence of a small black center in the scab may indicate that the blister is healing, but it is essential to monitor the area for any signs of infection or worsening symptoms.

You mentioned concerns about the color of the scabs, particularly the deep purple-black color of the ulcerated areas. This discoloration can occur as part of the healing process, especially if the skin has been traumatized (for example, from scratching). While it is natural to worry about potential scarring, many factors influence the final appearance of the skin after shingles, including the depth of the lesions, your skin type, and how well you care for the affected area during the healing process.

To minimize the risk of long-term scarring, it is crucial to avoid picking at the blisters or scabs, as this can lead to further skin damage and increase the risk of infection. Keeping the area clean and applying any topical medications as prescribed by your doctor can also help promote healing. If you notice any signs of infection, such as increased redness, swelling, or pus, it is essential to contact your healthcare provider promptly.

In terms of your anxiety about new blisters forming, it is understandable to feel concerned, especially after experiencing discomfort. However, if you are following your doctor's recommendations and taking the prescribed antiviral medication, you are taking the right steps to manage the condition. The antiviral medication, such as acyclovir, is most effective when started early in the course of the infection and can help reduce the severity and duration of the outbreak.

If you continue to experience pain or if new blisters appear, it is advisable to follow up with your healthcare provider. They can assess your condition and determine if any additional treatments are necessary. In some cases, further interventions may be required to manage pain or prevent complications.

In summary, shingles can be a distressing condition, but with appropriate medical care and self-management strategies, most individuals can expect to heal without significant long-term effects. Monitoring the healing process, avoiding trauma to the affected areas, and maintaining open communication with your healthcare provider will help ensure the best possible outcome.

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