what kind of illness i have and which doctor i should see - #12958

I would like to ask for your opinion regarding my case. My digestive symptoms began when I was 4 years old. I mainly had chronic diarrhea (the color was never brown), with mucus, foam, and sometimes green stools — in short, always abnormal. I saw several doctors, but none of them performed an ultrasound or any advanced examination; they only prescribed anti-inflammatory and antispasmodic medications. I followed this treatment for about six years. The last gastroenterologist who was following me advised my mother to schedule a colonoscopy and gastroscopy when I turned 16, if my symptoms returned. After I got better, I began experiencing unexplained fatigue, difficulty breathing, constant muscle and bone pain. At the age of 13, I instinctively began watching my diet — I stopped eating processed sugar, bread, and reduced my intake of white flour. Even today, I maintain a balanced diet, rich in fiber and protein, avoiding processed foods and junk food. At 14, my fatigue worsened. I wasn’t taking any medication at that time, but by the age of 16, my symptoms became much worse — I could barely stand for long periods, had severe breathing difficulties, and frequent hypoglycemia (around 0.55 g/L). I also started developing neurological symptoms: neck stiffness, numbness, cold extremities, electric-shock sensations, involuntary muscle twitching, and severe chronic headaches. In 2020, I began passing thick white mucus (like silicone), sometimes green, sometimes mixed with small amounts of blood (never bright red), along with painful subcutaneous nodules and frequent green or yellowish stools. I thought it might be stress-related, so I didn’t worry much. During that period, I was diagnosed with early-stage asthma, severe allergies, cerebral hypoxia, chronic sinusitis, and migraines. I consulted a neurologist who told me it was all psychological and prescribed Xydol and Dogmatil for depression. I took them for two months but stopped because I noticed no improvement. During that time, I still had mucus and blood in my stools but without any pain. Later, I was diagnosed with severe bronchial asthma. My pulmonologist never prescribed NSAIDs, but another neurologist prescribed the same antidepressants again (Xydol + Lomac capsules). I stopped everything because my neurological symptoms persisted. In 2023, I started experiencing unbearable abdominal pain, loss of appetite (or painful hunger), and extremely rapid bowel movements — up to 12 times a day and 10 times at night — which caused severe fatigue. Another neurologist found macrocytosis, a moderately high homocysteine level, and slightly low vitamin B9 (I had previously taken multivitamin B supplements). She prescribed 13 B12 injections, but my neurological symptoms persisted. She then advised me to see a psychologist (for the second time), but again, nothing changed. I gave up for about two years, completely losing hope. Then, in October 2024, I began forgetting basic things — my home address, familiar places, even people close to me. I had brain fog and concentration issues. In January 2025, I repeated the blood tests on my own: macrocytosis was still present, homocysteine around 20 µmol/L. A hematologist then ran a full panel and found vitamin B9 deficiency, vitamin D insufficiency (despite supplements), mild iron deficiency, and a slightly high erythrocyte sedimentation rate (ESR). I also received 15 B12 injections, although my B12 levels were technically within the normal range. While following this treatment, I reduced gluten, replaced white flour with whole-grain flour, maintained a fiber- and starch-rich diet with no processed sugar (only fructose), no caffeine, no lactose, and no industrial drinks. Despite all this, I still had abdominal pain and rapid transit, as if my body absorbed nothing. (However, I should note that I finally gained 8 kg after staying at 50 kg for nearly 10 years.) During Ramadan, I ate some homemade dates stuffed with peanut butter and covered in sugar-free dark chocolate with almonds. Shortly after, I had a severe vertigo attack (I thought it was related to my Ménière’s syndrome diagnosed 4 years ago) and immediate severe diarrhea with green, foamy mucus. I went to see a gastroenterologist who diagnosed lactose intolerance (without any test) and told me to “drink water in the middle of your meal.” Blood tests for celiac disease were negative, and a stool test was misinterpreted as Giardiasis (later ruled out by colonoscopy showing a healthy small intestine). He prescribed anti-diarrheal powders, antispasmodics, Flazol, and Smecta, along with a strict diet — no fat, sugar, fiber, lactose, or starch. I was told to eat only eggs, pasta, rice, fish, and boiled meat. I ended up hospitalized for malnutrition, but continued anyway. After 20 days, I developed severe constipation for nearly 3 weeks, unable to move properly. Once the treatment ended, I redid my blood tests in April — no more macrocytosis, no more deficiencies. My hematologist told me, “You’re perfectly fine — don’t come back, you have no digestive issue.” Still, I continued to suffer from abdominal pain and rapid transit (I should mention that stress never triggers my symptoms). In August, I noticed a large amount of mucus and blood in my stools. I underwent a short colonoscopy, which showed chronic rectosigmoiditis without any signs of IBD (inflammatory bowel disease). Blood tests again revealed no macrocytosis, but a high ESR, low vitamin B9, positive anti-intrinsic factor antibodies, and normal B12 levels. During the gastroscopy, an H. pylori infection was found. I completed the treatment successfully — no more acid reflux, nausea, or heartburn, and I can now eat normally. However, I still have persistent digestive issues, dry skin, white tongue with red patches, caseum, mouth ulcers, and inflammation from mouth to anus. Recently, I had a long ileo-colonoscopy, which was entirely normal — though no biopsies were taken. I will send you all my lab results, reports, and the images from both the short colonoscopy and gastroscopy.