Welcome to healthcare magic forum
Thank you for your query
i understand your concern regarding your friend skin problem.
It is difficult to reach diagnosis from only description.
it may be due to allergic or irritant dermatitis
,or some viral infection.
you are right that it is not due to hives or urticaria
please do not press or popped the lesion as chance of spreading is there.
he need to consult dermatologist
for proper management.
applying topical antibiotic
cream will also help him
I hope I answered your query