I don’t know what bit me, but it’s very swollen.

I do not know what was bitten by the swelling is very big, consider the insect bite dermatitis, should be taken in time to general treatment, topical drugs, oral medication.
1. General treatment: To check the wound site, if the bee bite has a poisonous stinger, the stinger should be removed and the venom squeezed out, and then rinsed with water. Cold compresses with ice can also be used locally to help relieve swelling and pain.
2. Topical medication: glucocorticoid creams, such as mometasone furoate cream and dieldrin cream, can be used locally. When localized blisters and oozing occur, boric acid solution can be used as a wet compress.
3. Oral medication: If the symptoms are serious, you can take oral anti-allergy medication, such as cetirizine hydrochloride, loratadine. If necessary, you can take small doses of oral glucocorticoids, such as prednisone.
The above drugs should be used under the guidance of a doctor, and patients should not use the drugs at will.
Don’t know what the bite is swollen, should promptly go to the hospital dermatology department, cooperate with the doctor to take treatment.