When a female patient develops a yeast infection, the clinical symptoms need to be determined by the specific site of infection. If a woman has a yeast infection in the vagina, she will develop mycosis fungoides. The common clinical symptoms include a marked increase in discharge, excessively thick discharge, a typical tofu-like appearance in severe cases, and a distinct odor in some patients. If the patient develops yeast infection in the lung can cause fungal pneumonia, the patient can develop cough, coughing sputum, fever and other symptoms. When treated with antibiotic drugs, the condition can show a gradual worsening. When yeast causes fungal mouth ulcers, the common symptoms mainly include mouth ulcers with white membranous material covering the surface of the ulcers.