Many gnat bites on scalp 6 days ago. itch & draining. painful swollen nodes back of scalp and neck, esp neck. how to treat? no fever or cellulitis.

? could be infection: Drainage implies infection of your scalp/skin. If it is yellowish discharge then it certainly is infection which will require antibiotics by mouth. Go see your doctor . Itching can be relieved with Benadryl (diphenhydramine) capsules(may make you sleepy). If it is more than a small area(less than one inch) which is draining, you need to see a doctor to help you treat it better.