Hello,
Tightness & blisters on the knee commonly occurs due to
stress & overuse. Popping sound from the affected knee is indicative of meniscus/ ligament tear, insufficient
synovial fluid in the joint. Crepitus is also indicative of medical conditions like OA, RA &
Patellofemoral pain syndrome.
Treatment is by medicine like NSAIDS, ice packs,
physical therapy or a brace to support the knee. You are suggested to visit ER, get clinically assessed. Your treating doctor will tell you to get blood & imaging tests to detect pathology like tear, injury,
fracture, OA, RA, etc. Your treatment will depend on the severity of the pathology detected.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. Nupur K, General & Family Physician