There is no confirmed public explanation for why Senator Susan Collins appears to “shake,” and she has not disclosed any specific medical diagnosis related to this.

What people notice

Many viewers and voters have commented over the years on:

  • A visible tremor or shakiness when she walks or moves.
  • A quaver or “warble” in her voice and somewhat halting speech pattern.

These observations mainly come from TV appearances, speeches, and informal online discussions, not from medical disclosures.

Speculation vs. confirmed facts

Public discussion has floated a few speculative ideas:

  • Some articles and forum posts mention spasmodic dysphonia as a possible explanation for her distinctive voice, but stress that this has never been confirmed by Collins or her doctors.
  • Reddit and forum users also mention possibilities like age‑related “essential tremor” or other benign neurological tremors, again as lay speculation, not professional diagnosis.

Crucially:

  • Collins has not publicly said she has spasmodic dysphonia, Parkinson’s, or any other specific condition.
  • No major, credible outlet reports a confirmed diagnosis; most pieces explicitly say it is “not clear” whether she has a health problem beyond normal aging.

Age and normal tremor

Collins is in her 70s, and some shakiness can be common in older adults without indicating a serious disease.

  • Articles that talk about her “shaking” often suggest it may simply be age‑related changes in movement or tremor, while admitting the cause is unknown.
  • Online commenters sometimes jump from “she shakes” to dramatic conclusions, but those claims are not backed by medical confirmation.

How to interpret the “why does she shake?” question

When people ask “why does Susan Collins shake,” they are usually reacting to:

  • Her on‑camera body tremor and head/hand movements.
  • Her tremulous, slightly strained speaking style, which looks and sounds different from many other senators.

However:

  • The honest answer is that only Collins and her doctors would know the real medical reason, if there is one.
  • Public information supports only this: she appears to have some tremor and a distinctive voice; the underlying cause has not been disclosed and remains speculative.

TL;DR: People notice that Susan Collins sometimes shakes and has a quavering voice, and some speculate about conditions like spasmodic dysphonia or age‑related tremor, but she has never confirmed any diagnosis, so the true reason is not publicly known.

Information gathered from public forums or data available on the internet and portrayed here.