Hi, My 23 year old son has developed a lump in his armpit appox 2 days ago, it is very sore to the touch and he is having difficulty putting his arms up high and yesterday he started to feel unweel with a headache today he is still unwell and has a lump now under the other armpit.
Hello! Thank you for the query. This lump is most likely an abscess. It usually appears due to infection caused by shaving in this area. Pus accumulation causes hard and painful lump. Headache is caused by fever and general illness. He should not wait with it any longer. The abscess should be incised and pus Chat Doctor.  He needs to consult general surgeon. Hope this will help. Regards.