Greetings and welcome to justanswer,
The hair follicles are enlarged is likely to be due to the folliculitis which is infection of the hair roots.
You need to take the oral antibiotics like amoxycillin, ofloxacin, septran, cephalexin, etc for 7-10 days duration.The addition of analgesic drugs like diclofenac, ibuprofen, etc. will help in the control of the pain and inflammation.The topical application of antibiotic ointments is also recommended.
Let me know if you have any doubt.
Thank you for the enquiry,
The cluster of skin tags can be the part of the infection on the local site which is spreading.
You need to take the oral antibiotics and it will control the infection and the symptoms.
The running and age is unlikely to cause such symptoms.
You may submit photos for better examination.
Let me know if you have any doubt