<s>[INST] Hello, I got a sore in my nose which got bigger and sorer. Now the membrane in one side of my nose is constantly sore and crusty with yellow crusts. I ve had it for two weeks now, a week ago it felt like the side of my mouth split when I opened my mouth too wide. Then I started getting sore crusty scabs on the side of my mouth in the corner. Everything I open my mouth they split and it is sore. Do I have to go to the doctor? I ve been putting antiseptic cream on them but it doesn t appear to do anything. Are they related? Also I ve developed a tender lump on my lower jaw by my neck on the same side.. Not sure if that s related, I just feel run down. [/INST] Hi.It is already 2 weeks and you still have not shown to a Doctor. Yes, you must see a Doctor.The sore in the nose can be an infection and the cut at the mouth corner is called angular stomatitis , comes on usually due to deficiency of multivitamins and folic acid, you need therapeutic supplements.The tender lump in lower jaw is secondary to the infection you have got.Consult a Doctor for prescription based antibiotic and supportive medicines </s>