surgical spirit daala sudda karapan.
on second thought don't.
Immediate treatment consists of soaking the bite site with very warm but not scalding water (42–50 °C (108–122 °F)) and washing with soap. This deactivates the majority of the centipede venom's proteins. Depending on the type of centipede and level of envenomation, this treatment may not degrade the entire venom dose and residual pain will remain.
Individuals who are bitten by centipedes are sometimes given a urine test to check for muscle tissue breakdown and/or an EKG to check for heart and vascular problems.
Reassurance and pain relief is often given in the form of painkillers, such as non-steroidal anti-inflammatory medications, antihistamines and anti-anxiety medications. In a severe case the affected limb can be elevated and administered diuretic medications.
Wound care principles and sometimes antibiotics are used to keep the wound itself from becoming infected or necrotic.
From wikipedia.