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What causes bluish-red rash on the side of the neck?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hello doctor,

This is regarding my friend's infection condition. He went to a sleepover at a friend's place and the next day had a bluish-red rash on the right side of his neck. It was very painful. He consulted a doctor who gave injection for a fungal infection. But the next day the rash was bigger and prominent than before. The pain was also more severe and movements were difficult. I am attaching a picture of each of these two days.

Kindly help.

Answered by Dr. Charu Bansal

Education:

MBBS

Professional Bio:

Dr. Charu Bansal is a Dermatologist and Cosmetologist with extensive clinical experience. She specializes in diagnosing and treating a wide range of skin, hair, and nail conditions, and also provides advanced cosmetic dermatology treatments. Dr. Charu currently is fluent in English, offering personalized and expert dermatological care to her patients.

This doctor is not available for online consultations on the platform anymore.

Hello,

Welcome to icliniq.com.

I read your query and can understand your concern.

I have seen the attached photographs (the attachment was removed to protect the patient's identity). As per the details, it seems that your friend has a condition of the skin called paederus dermatitis. It is also known as insect bite dermatitis. It is characterized by a sudden spontaneous rash which is red colored with a black bite mark and is mostly painful or associated with a burning sensation.

In such cases, I prefer to advise oral antibiotics like Cloxacillin and topical cream containing a combination of antibiotic and steroid-like Futop-B cream. It is to be applied over the affected area twice daily for five to seven days. In addition, antihistamines like the tablet Levocetirizine also help.

Kindly consult a specialist doctor, discuss with them, and take medications with their consent.

I hope this helps.

Thank you.

Medically reviewed by Dr. Divya Banu M
Published At September 7, 2019
Reviewed At May 27, 2026

Education:

MBBS

Professional Bio:

Dr. Charu Bansal is a Dermatologist and Cosmetologist with extensive clinical experience. She specializes in diagnosing and treating a wide range of skin, hair, and nail conditions, and also provides advanced cosmetic dermatology treatments. Dr. Charu currently is fluent in English, offering personalized and expert dermatological care to her patients.

This doctor is not available for online consultations on the platform anymore.

Education:

BDS

Professional Bio:

Dr. Divya Banu M is a dedicated Dental Surgeon with valuable clinical experience. She specializes in the diagnosis, prevention, and treatment of various diseases and conditions affecting the oral cavity. With a gentle and patient-centered approach, she is committed to promoting oral health and enhancing smiles through quality dental care. Her areas of expertise include restorative dentistry, preventive dental care, and cosmetic dental procedures.

This doctor is not available for online consultations on the platform anymore.

Same symptoms don't mean you have the same problem. Consult a doctor now!

Education:

MBBS

Professional Bio:

Dr. Charu Bansal is a Dermatologist and Cosmetologist with extensive clinical experience. She specializes in diagnosing and treating a wide range of skin, hair, and nail conditions, and also provides advanced cosmetic dermatology treatments. Dr. Charu currently is fluent in English, offering personalized and expert dermatological care to her patients.

This doctor is not available for online consultations on the platform anymore.

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