Your daughter may be having tinea versicolor
most probably. It is not bruise
. Tinea versicolor is a superficial fungal infection
caused by melassezia furfur. It is a contagious disease and spread by direct contact or fomites. Poor immunity,perspiration or soap might increase the disease. Immunocompromised condition should be ruled out by blood tests. The fungus reside in scalp. So, ketoconazole
containing shampoo would be helpful in treating the disease.
Give her ketoconazole for 2 to 3 weeks. And apply ketoconazole cream twice a day for long time. Dettol
liquid bath may be given. Improve hygiene and immunity. Give her healthy food. She may be benefitted.
I hope you got my answer.
Dr. Ilyas Patel MD