What causes itchy lesions on the chest and arms, and is it serious?

Hi,

Welcome to icliniq.com.

I read your query and understand your concern.

After reviewing the photo (attachments removed to protect the patient's identity), it seems to be pityriasis rosea (PR), a skin condition characterized by a distinctive rash, often starting with a single lesion followed by multiple lesions over the trunk and arms. The mild itching, lesion morphology, and distribution align with PR characteristics. PR typically begins with a single lesion, followed by multiple lesions over the trunk and arms within a few days. Viral infections or vaccinations may precede lesion appearance.

PR usually resolves in a few weeks without causing significant harm. I suggest using moisturizing creams, lotions, and bath oils. Apply topical Calamine lotion for itch relief, and if necessary, mild steroids like Hydrocortisone can be used. Antihistamines like Cetirizine may help. Sun exposure can aid in resolution. If the condition persists or worsens, consult your doctor or dermatologist for further examination. Although unlikely based on the details provided, I also suggest considering the possibility of secondary syphilis, characterized by skin rashes, mucous membrane lesions, and flu-like symptoms, often occurring weeks to months after the initial infection, with a sexual risk exposure history.

I hope this helps.

Please revert in case of further queries.

Thank you.