After dinner, Guo Xiang went to see Ji Changlin with two bags of specialties brought from the northeast.

When he arrived, he was still seeing a doctor, and Guo Xiang stood by and waited.

Ji Changlin glanced at her. "Are you back?"

"Master!" Guo Xiang shouted.

"Come and have a look!" Ji Changlin said naturally.

Guo Xiang put down his things and went over. He sat down in front of the patient and stretched out his hand to feel the patient's pulse.

Touch the left hand pulse and the right hand pulse. No problem.

"Master, I can't diagnose it!" Guo Xiang frowned. It was the first time he had encountered such a thing.

She opened the fluoroscopy again and scanned the patient's body. She didn't see any problem.

Ji Changlin nodded, "it's a little strange!"

Guo Xiang asked the middle-aged man in front of him, "uncle, what's wrong with you?"

"My back is itchy. I dare not touch it. It's hard to touch it. It's like a thorn, but I let my mother-in-law see it. There's nothing." Said the middle-aged man.

"Can you take off your clothes and let me see?" Guo Xiang asked.

The middle-aged man nodded. It doesn't matter if he is a man. In addition, when it's hot, many people take off their clothes and work. It's common to be naked.

He took off his clothes and turned to show Guo Xiang his back.

Guo Xiang lowered his head and looked carefully at the middle-aged man's back. The countryman's skin was tanned, but he looked very healthy. He didn't find anything unusual except a few moles.

Put out your finger and touched it.

"Pain!" The middle-aged man shouted and reached out to catch the place Guo Xiang touched just now, "it's itchy again!"

Guo Xiang touched several other places. Every time he touched the man, he screamed. His whole back was almost uncomfortable, but other places were fine.

It's really strange that Guo Xiang had never encountered such a case in his previous life.

"Have you checked in the hospital?" Asked Guo Xiang.

"Yes, the doctor doesn't know what's going on." The middle-aged man said with a bitter face.

"The doctor also helped me wipe it with alcohol. I took a bath and washed it several times at home, but it didn't work. It itched and hurt when I touched it. It's really uncomfortable. I can't sleep well!" The middle-aged man has a sad face.

"I have never seen such a case." Ji Changlin shook his head.

"Dr. Ji can't even help you. What should I do?" The middle-aged man wailed.

Guo Xiang pondered that he had seen that kind of skin scratch disease before. As long as he grasped it gently, he would scratch out traces and swell up one by one, as if he had been beaten. Also known as artificial urticaria, it is an allergic reaction of skin and blood vessels.

But there were no scratches on the man's skin, and only his back reacted, not elsewhere. It's strange.

Is there something wrong with the body's immune system? But it can't be checked, and the current medical technology can't reach it.

"Uncle, when did your symptom begin?" Asked Guo Xiang.

"Just two days ago, not before." Said the middle-aged man.

"Two days ago?" Guo Xiang frowns, which is even more wrong.

If it is scratch disease or body autoimmune problem, it is generally congenital and will not grow so old and just appear.

Guo Xiang shook his head at Ji Changlin. "Master, I don't know."

"I'll see again." Ji Changlin frowned and reached out to feel his pulse again.

From the aspect of pulse, it's no problem. At least it's not caused by internal organs. It should be the external reason, but there's nothing on the outside. It's really strange.

Guo Xiang was also thinking and asked, "uncle, did you encounter anything special the other day? Or something strange? "

"Something special?" The middle-aged man frowned, thought and shook his head, "no, just at home, then went to the vegetable field to grow vegetables, came back to eat, all the same meals as usual, and didn't buy anything special."

"Think back to the things before you had this symptom, all the details." Guo Xiang said.

It was nothing before. It just appeared two days ago. It must be something that happened before this symptom appeared. It won't appear for no reason.

"All?" The middle-aged man began to recall, "I got up that morning, ate sweet potato porridge at home as usual, and then took a straw hat and hoe to the vegetable field. My mother-in-law said I wanted to plant some pepper seedlings, so I went."

"The sun was very big that day. After turning over the fields for a few years, I sweated a lot, so I took off my clothes and worked with my bare arms." Said the middle-aged man.

Guo Xiang nodded. It's common for many people in the countryside.

"Then I planted the pepper seedlings, took my clothes home, and when I passed under the locust tree of the village committee, someone called me, so I went to have a drink. It was very windy and cool at that time. I talked with people there for a while, and then I went home. "

"Because there is work in the afternoon, I don't take a bath immediately. After I finish my work in the afternoon, I go home to take a bath in the evening. I eat sweet potato rice, pickles and green vegetables in the evening. There are no special dishes. But after taking a bath, I feel uncomfortable when I go to bed at night. My back is itchy and painful when I grasp it. " Said the middle-aged man.

"Didn't you put on your clothes when you came home from the vegetable field in the morning?" Asked Guo Xiang.

"No." The middle-aged man shook his head. "His clothes are sweaty and uncomfortable. He didn't wear them. He tied them to a hoe and took them back."

"I didn't encounter anything strange when I went home?" Guo Xiang asked again.

"No..." the middle-aged man shook his head, just as usual.

Guo Xiang ponders. Why is it so strange?

She stroked the uncle's day, including several key words, breakfast, planting, sweating, undressing, locust tree, chatting, drinking water, dinner, bathing

If we insist that there is a word different from daily life, that is locust tree?

What's special about locust trees? Locust trees are also called ghost trees. Some people say that locust trees attract ghosts. Is he evil? Guo Xiang doesn't believe it. She is an atheist.

"Are the locust flowers in bloom now?" Asked Guo Xiang.

The middle-aged man was stunned. "Yes, it's warm early this year, and the flowers bloom earlier than in previous years."

"Is uncle allergic to pollen?" Asked Guo Xiang.

"What is pollen allergy?" Middle aged people don't understand.

"Just can't smell the locust flower. If you touch the pollen in the flower, your nose will itch and sneeze. If the pollen falls on your body, you will have a rash." Guo Xiang said.

"No." The middle-aged man shook his head. "The locust tree has been in the village for decades. We grew up under the tree. We used to pick locust flowers to play, not what you said."

Neither this nor that. Guo Xiang is really a little discouraged. It's really a difficult disease.

"Forget it, you go back first." Ji Changlin said to the middle-aged man, "I'll think about it in the evening."

The middle-aged man had no choice but to go home.

Guo Xiang took the specialty he brought to Ji Changlin. He took it. "Are you back for the college entrance examination?"

"Yes!" Guo Xiang nodded, "only after reading university and entering the hospital can I give full play to my director of Western medicine."

"Take a good test, master. I'm sure you can." Ji Changlin said.

"Thank you, master!" Guo Xiang nodded.

When he went back, Guo Xiang specially looked around the locust tree of the village committee, but he couldn't see anything clearly at night. He decided to come again tomorrow.