Armpit pain after shaving may be caused by skin damage, you can use topical iodophor and other disinfection; if there is infection, you can use antibiotic drugs.
If there is pain in the armpit after shaving, it is usually caused by skin damage due to improper use of razor. You can use povidone-iodine solution to clean and sterilize the skin in the armpits, and pay attention to keeping it clean and dry, which can be gradually relieved by yourself.
If infection occurs, you can also use antibiotic drugs for treatment, such as fusidic acid cream, mupirocin ointment, erythromycin ointment and so on.
If the symptoms are obvious after shaving the armpit hair, go to the hospital in time to check, and pay attention to the use of drugs as prescribed by the doctor.