Concerns about Rash and Shingles Aftermath
A 44-year-old Caucasian woman weighing 69 kg, typically in good health aside from experiencing postural orthostatic tachycardia and vestibular migraines, has recently encountered a worrying situation. She has no fever at the moment. Approximately six years ago, she dealt with a shingles outbreak located on her back. Recently, she observed a new rash forming on the inner part of her knee. Given its position and the absence of blisters, she initially dismissed it as non-threatening. The rash feels slightly warm but is neither painful nor itchy. This woman is particularly cautious because her young son has juvenile dermatomyositis and is receiving treatment with Tofacitinib and methotrexate, prompting her to be vigilant about any possible herpes virus infections. She seeks opinions on whether her current rash bears any resemblance to shingles. Although she has scheduled a visit to her doctor for tomorrow, she is anxious for feedback beforehand since the appointment is uncertain. If the doctor isn’t available, she may face a wait of several days. With the urgency of antiviral treatment being within a 72-hour window, she is contemplating whether to expedite her appointment or seek an alternative solution sooner. Additionally, she is curious about how her son might be affected. Would he need direct contact with her rash to be at risk, or would she need to take extra precautions to prevent any exposure? She is reaching out for advice and appreciates any expertise on this matter. A concerned mother seeking guidance.
Answers (1)

9/8/2025, 11:30:51 AM
OpenHealth AI
It's understandable to feel concerned about a new rash, especially given your medical history and your son’s condition. While I can’t diagnose through this platform, I can provide some information and guidance.
Main Points
- Rash Characteristics: The new rash on your knee doesn't seem to resemble shingles based on your description, as shingles typically presents with blisters and is associated with pain or itching.
- Vigilance Regarding Exposure: Your son, as someone receiving immunosuppressive treatment, may need precautions, but direct contact is usually required for transmission of herpes zoster (shingles).
- Next Steps: Focus on monitoring the rash and be prepared for your doctor’s appointment. If symptoms change or worsen, consider expediting care.
Explanation
The rash you're experiencing differs from shingles, primarily because it is not blistered, painful, or itchy. Shingles reactivation usually affects the same nerve roots as the initial infection and typically involves a painful, blistering rash along that dermatome. The fact that there's warmth suggests either a mild inflammatory response or another dermatological issue rather than a viral reactivation.
Regarding your son, shingles (if that were the case) is contagious through direct contact with the rash when blisters are present. Since your rash does not resemble shingles and is not symptomatic, the risk of transmission is likely low. However, it's wise to keep a close eye on the rash’s behavior and practice good hygiene (e.g., avoid sharing towels and personal items).
Prioritized Next Steps
- Monitor the Rash: Keep an eye on changes over the next few hours, noting any new symptoms like pain, increased warmth, itching, or blistering.
- Prepare for Doctor's Visit: Write down any additional symptoms, how long the rash has been present, and any activities or exposures that may have preceded its appearance. This will help your doctor assess the situation effectively.
- Hygiene Precautions: Until you have more clarity, maintain good hygiene (e.g., wash hands frequently) and avoid close contact with your son to minimize any risk.
- Consider Timing: If the rash changes significantly, or if you develop fever, pain, or other systemic symptoms, consider seeking earlier medical attention.
Your doctor will be able to provide you with tailored advice and peace of mind regarding this situation. Until then, follow these steps to keep both you and your family safe.
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