It depends on how you lose weight ... if you exercise, see if your clothes are allergic to sweat, or to something. Sometimes you may be allergic to slimming cream, which is probably related to controlling your diet when you lose weight. Dieting can lead to some nutritional deficiencies and may lead to allergies. . . I eat less as soon as I lose weight, so I can't get the sun on my face. . . . I'm so worried that my normal diet will be restored soon.