I don't know why. It's a hard piece, and there's slight pain when pressing
After reading the photos you sent, there is a nodule under your chin, which looks a little prominent, a small hard piece, and there is a slight pain when pressing. In this case, it is generally considered that the submaxillary lymph nodes are swollen. The reason should be that there is inflammation around, such as oral ulcer, toothache, pharyngitis, etc., which may lead to the swelling of nearby lymph nodes. It is recommended to eat Pudilan anti-inflammatory tablets. Drink more water and don't eat spicy and greasy food.
This is mainly to see if it is subcutaneous furuncle. You need to pay attention to whether there is fire or progressive increase. You need to pay attention to rest, not to squeeze, and whether there are colds and other uncomfortable symptoms. If it's OK, it will subside slowly. If necessary, check blood routine and local color Doppler ultrasound.
In this case, lymph node enlargement may also occur. Generally, lymph node enlargement is caused by upper respiratory tract infection, cold or other inflammation. If necessary, lymph node ultrasound should be performed in time, or lymph node biopsy should be further performed, and attention should be paid to maintaining a healthy lifestyle