It seems like your mother’s condition involves more than just the skin; you’re right to consider the gut’s role. Addressing this holistically, from a Siddha-Ayurvedic perspective, could provide more balance to her system.
First, focusing on her agni (digestive fire) could be beneficial, as optimal digestion is key. Encourage her to eat foods that are freshly prepared and easy to digest, avoid cold or refrigerated leftovers, as they might dull agni. Since you’ve already excluded inflammatory foods, continue to emphasize lightly cooked vegetables, stewed fruits, and non-spicy lentils.
Given her history of acid reflux, it’s crucial to balance her pitta dosha. Small doses of organic aloe vera juice, consumed on an empty stomach in the morning, can be soothing. Including cooling herbs like coriander and fennel in her meals could also offer relief.
For the autoimmune aspect, managing stress is vital since it exacerbates imbalances. Daily practices such as Pranayama or meditation might help calm the mind and reduce stress.
Now, about the reactive septic arthritis and immune support: Begin incorporating blends of haritaki, amala (in form of Triphala powder) to rejuvenate tissues and ease any constipation she may have. Starting with half a teaspoon of Triphala at bedtime with warm water can gently cleanse her system.
However, the presence of blisters returning in absence of medication, and history of infections like urinary ones are legitimate concerns. If conventional medicine has identified specific interventions like Rituximab, prioritize discussions with her current healthcare providers. They have insights into her immediate needs and would understand the urgency or necessity of intervention better in context.
Above all, continue close dialogue with healthcare professionals before altering her current medical treatments. Integrating Ayurvedic practices as a supportive therapy rather than a primary treatment for active autoimmune flares is paramount for safety.