Citing health reasons, Alexandria state Rep. Herbert Dixon, who chairs the Louisiana House Labor Committee, resigned.

Dixon is the fourth state representative to vacate a seat in the 105-member House in recent weeks.

Dixon has been undergoing chemotherapy at Houston’s M.D. Anderson Cancer Center.

“It became clearer and clearer to me this is a time I need to spend with family and friends,” Dixon said Thursday. “I have to get my arms around my health and spend more time with my family.”

Dixon said he has a biopsy scheduled Tuesday, after which his doctors will prescribe a treatment protocol. “I am fine enough,” Dixon said. He said he may even explore job prospects. “I think at age 65 I have possibilities.”

Dixon, a Democrat, is chairman of the House Labor and Industrial Relations Committee. The vice chairman is Chris Broadwater, a Hammond Republican.

Dixon’s resignation prompted House Speaker Chuck Kleckley to call a special election for the central Louisiana House District 26 seat.

Three other special elections are already scheduled to fill vacant House seats in time for the April 13 start of the 2015 regular legislative session.

Candidate qualifying for Dixon’s as well as the other three seats runs Jan. 7-9.

The primary election will be held Feb. 21 with runoff elections March 28, if required.

Two House members are leaving to assume judgeships — http://theadvocate.com/news/10738000-125/hunter-greene-unseats-family-court">state Rep. Hunter Greene, R-Baton Rouge, and http://house.louisiana.gov/h_reps/members.asp?ID=8">state Rep. Jeff Thompson, R-Bossier City. http://theadvocate.com/news/11008528-123/champagne-resigns-house-seat">State Rep. Simone Champagne, R-Jeanerette, resigned to take an administration position in the town of Youngsville effective Jan. 1.

Political action committees of the Louisiana Association of Business and Industry already have endorsed Baton Rouge Metro Councilman Buddy Amoroso in Greene’s District 66 and Iberia attorney Blake Miguez in Champagne’s District 49.

Follow Marsha Shuler on Twitter, @MarshaShulerCNB. For more coverage of the State Capitol, follow Louisiana Politics at http://blogs.theadvocate.com/politicsblog.