Hello, I can understand your concern for psoriasis to flare up after bee sting. IN general psoriasis is not flared up by bee sting and as it is a chronic problem so acute flare ups are not seen with this type of episode. Psoriasis is a chronic disease and needs proper best treatment. In my patients I use multiple types of therapies including oral and topical treatment. It requires multiple causes to get flared up inching certain medications, cold, emotional stress and other related factors. Even if as it has flared so I suggest you to meet a dermatologist as soon as possible to control the acute flares. For the same I use methotrexate. It is the mainstay of the therapy and in my patients. I choose to give the same after thorough blood investigations. I suggest you to meet a dermatologist and go for complete examination fo the skin to give you proper best treatment. You can apply steroid creams for the early resolution of the lesions and liberal moisturization. All the best.