STOCKTON — Becky Walthan lives with several serious health conditions, including psoriasis, a chronic skin condition that causes inflammation and red patches.The 45-year-old Stockton woman’s problems are made worse by the fact she lives in a tent clinging to the side of a canal bank.Walthan would like to move inside — especially since it’s been so cold and stormy lately — but says shelter conditions are unbearable and [...]