88 yr old woman has experienced skin prickling on chin, throat, and now forearms after being outside in sunshine. Although covered in hat, and sunscreen, this "prickling,itching" gets worse only at night, and seems to be progressing from face to throat and now her forearms. So far, aloe verra seems to be making it bearable to get to sleep. issue has been ongoing for 10 days. Question: what nutrients is she missing to protect herself.