How do u get rid of lice if you had it for 5 years?

Lice for 5 years. You need to consult your doctor for an examination and discussion about the lice. Five years of infection is a major problem. Be sure to follow medical advice closely and avoid re-infection.
Agree with Dr. Pizzo. Tx of lice requires accurate identification of nits & / or lice. A pediculicide is usually used- otc like nix (permethrin) or rid or prescription meds like lindane or malathion. Work carefully through hair & remove individual nits. Purchase a special lice nit comb to aid you. Check for nits & remove as seen over the next 7 to 10 days. If there are nits after 7 to 10 days – a 2nd pediculicide tx may be needed.