<s>[INST] My index finger is beyond itchy & swollen. Burns when it touches water or scratch it. Hurts to bend or the knucle. I dont know why its doing this. Started last night. Im freaking out. Been having horrible allergies & bites all over past 2 weeks too. I sprayed my bed for bed bugs but this finger thing never happened. First time! [/INST] Hello, It is likely that you are suffering from a generalized acute urticaria and angioedema episode. If there is no fever, abdominal pain or breathing trouble then the situation is not that serious, but apart from long acting antihistamines like Allegra, you will need corticosteroids to overcome this acute episode. Please see your doctor regarding this prescription. There are certain Chat Doctor. Thanks. </s>