I would really like to have a "chat" with this lady, and my baseball bat would love to meet her!
As Eloise mentioned, can you find someone above the disability officer and ask for their help? Bring in letters from your pdoc and T and explain what's happened so far. You DESERVE to be treated with respect and have accomodations made if your doctor "prescribes" it. What would this teacher say if a diabetic went into insulin shock and passed out? "Get up and change your attitude"???
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From the movie The Hours: "If I were thinking clearly, Leonard, I would tell you that I wrestle alone in the dark, in the deep dark, and that only I can know. Only I can understand my condition. You live with the threat, you tell me you live with the threat of my extinction. Leonard, I live with it too."