dental abscess
"I have an inflammation around my wisdom tooth which has spread to tonsillitis and I was prescribed Phenoxymethylpenicillin by my GP and Metronidazole 400 / three times a day by my dentist, who agreed I can take them together. 
Within a first pill of Metronidazole I started to have a massive headache, so I took paracetamol too. After the second pill I woke up sweating and dizzy with a terrible rash on my hands and painful red spots inside my fingers and under my nails. I can't use my thumbs properly as they are hurting me. However, I still continue taking this medication because I've been having such a terrible infection and it's spreading too quickly. I'm on my second day now but I feel improvements, although they are very slow. Hopefully everything will be ok."