welcome to healthcare magic forum
thank you for your query
i understand your concern about skin problem .
it look like drug reaction or photo reaction .
3 some phototoxic medicine is there .
you must avoid sun exposure while taking medicine
or you can apply good sun screen before going out side.
without examine it is not possible to say about which drug has cause it .
in night apply good moisturizer cream,
better to consult dermatologist
for proper treatment.
i hope i answered your question