Hi,Dear,Good Morning and Thanks for your query to my virtual Clinic At HCM.
I studied your query in depth and understood your concerns .
Causes for lump on shoulder in your kid as follows-
Mostly they are -Chronic
Scalp wound infection with
boil on shoulder with pus discharge.
Treatment-
Tab-NSAIDs -like Voltaren
Tab-
Amoxycycline 250 mg x three times a days
Dressing for the Scalp infection and
Surgical I and D for Boil with
abscess on Shoulder.
Check with ER Surgeon and check your fbs and pps,and plan for Excision
Biopsy of the lump to resolve the worry.
Don't worry of them,as they could be relieved with proper treatment.
Hope above reply would help you to relieve of the issue you have.
Welcome for any further query to ME and HCM.
Wishing you a Fast Recovery.
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With Regards
Dr.Savaskar