Your doctor had already advised you properly regarding picon and precautions required with its usage. Pimecrolimus
can lead to increased propensity to sun burn if outdoor activities are performed without proper precaution. What you need to do do now is to stop applying picon over sunburn
areas. Do cold compresses over sun burn areas. Apply aloe Vera
gel or calamine
lotion. Avoid sun completely for few days. After some days as a part of healing, the burnt areas will get dry and peel off. Let them peel off spontaneously. Take care.