Background/Aims: Very early-onset inflammatory bowel disease (VEO-IBD), defined as IBD diagnosed in patients younger than 6 years, is a challenge for pediatric gastroenterologists. Although there have been reports regarding VEO-IBD in Western countries, those in Asia are still lacking. This study aimed to investigate the clinical features of Japanese VEO-IBD patients. Methods: Patients with VEO-IBD diagnosed between 2006 and 2019 were evaluated retrospectively. The disease phenotypes were classified into ulcerative colitis type (UC-type) and Crohn’s disease type (CD-type), and the clinical features and courses were compared between the phenotypes. Results: Overall, 54 VEO-IBD patients (19 patients with UC-type and 35 patients with CD-type) were evaluated. The median age at onset was 18 months. One patient had severe combined immunodeficiency (SCID), and 9 patients had monogenic IBD. Monogenic IBD was more prevalent in the CD-type patients with perianal disease (CD-type (PD)). The age at onset was significantly lower in the CD-type group (P<0.05). The most common initial symptom was bloody stools (70%), followed by diarrhea (63%), weight loss (24%), fever (20%), and perianal disease (20%). Excluding patients with SCID and monogenic IBD, 23 out of 44 patients (52%) required biologics. The biologics were switched in 11 out of 44 patients (25%), and the majority of these patients (82%) were in the CD-type group. Overall, 9 patients (20%) required intestinal resection or ostomy placement. Conclusions CD-type tends to occur at an earlier age, and monogenic IBD occurs significantly more frequently in CD-type (PD). Disease severity and treatment should be individualized, owing to the disease heterogeneity.

Introduction：Here we report the case of a patient with Parkinson disease (PD) who showed improved physical function and non-motor symptoms, including fatigue and dysautonomia, through a multidisciplinary collaboration involving rehabilitation treatment, nutrition, and medication management.Case：A 77-year-old woman with PD was hospitalized for condition assessment and environmental adjustments and complained of fatigue and dizziness. She presented with decreased physical function, sarcopenia, orthostatic hypotension, and an impaired circulatory response during exercise. A multidisciplinary conference was conducted to address these issues, and we decided to implement rehabilitation treatment, nutrition, and medication management.The rehabilitation program consisted of 1 h/day physiotherapy sessions involving stretching exercises, muscle-strengthening exercises, and walking training. Because she often made medication administration errors, a nurse managed them on her behalf. Nutrition management was established to ensure sufficient energy for her total energy expenditure.At discharge, a notable improvement was recorded in Part 1 of the Movement Disorder Society Unified Parkinson's Disease Rating Scale, and the patient's complaints of fatigue and dizziness had subsided. Additionally, physical function measures such as skeletal muscle mass, comfortable walking speed over a 10-m distance, 6-min walking distance, and Berg Balance Scale score improved. To optimize the patient's home environment, home nursing, home-visit rehabilitation, and meal delivery services were introduced to manage her medication and nutritional needs.Discussion：In addition to rehabilitation treatment, the reconsideration of a patient's daily living activities, such as taking medications and meals, is important for improving their physical function and non-motor symptoms including fatigue and dysautonomia.