Don't know what kind of insect bit me, but the swelling is extremely severe.

Generally, if you are unsure which insect bit you but experience swelling, it could be related to insect bite dermatitis, foreign body residue, spider bites, wasp stings, flea bites, or other causes. The details are as follows:

1. Insect Bite Dermatitis

If a mosquito bite results in severe swelling, it might be due to insect bite dermatitis—a common skin condition. Under medical guidance, antihistamines such as cetirizine tablets or promethazine hydrochloride tablets may be taken. If redness and swelling occur, topical treatments like hydrocortisone cream or tacrolimus ointment can be applied.

2. Foreign Body Residue

After a tick bite, local redness and pain may result from residual foreign material left under the skin. It is recommended to visit a reputable public hospital for evaluation by a general surgeon. A doctor should assess the condition and provide appropriate treatment.

3. Spider Bites

Bites from certain spiders may cause swelling, especially those from highly venomous species such as black widow or brown recluse spiders. In such cases, the bite site typically shows significant pain, swelling, and redness, and systemic symptoms may even develop.

4. Wasp Stings

A wasp sting may lead to intense local pain, swelling, and redness. For individuals with allergic tendencies, the sting may trigger a severe allergic reaction, including anaphylactic shock. Immediate medical attention is required in these situations.

5. Flea Bites

Flea bites can introduce toxins that provoke allergic reactions, leading to the aforementioned symptoms. Under a doctor’s supervision, oral medications such as cetirizine hydrochloride tablets or loratadine tablets may be used for treatment.

If any discomfort occurs, prompt medical care is necessary. As preventive measures, wear long-sleeved clothing and long pants, and use insect repellents to avoid insect bites.