Myasthenia gravis

What it is, in plain words

Myasthenia gravis is a condition where the muscles tire and weaken more easily than usual, especially with use. It happens because the signals between the nerves and muscles do not get through as well as they should. A key feature is that the weakness often gets worse the more a muscle is used, and better with rest.

It commonly affects the eyes (drooping lids or double vision), the face, swallowing, speaking, and the arms and legs. Because the weakness comes and goes through the day, it can be hard for others to see how much it takes out of you. That "invisible" quality is one of the hardest parts.

The kinds of experiences people track

A simple record can help you and your clinician see how your muscles behave. People often note:

• When weakness is worst — mornings, evenings, or after activity.
• Eye symptoms — drooping lids or double vision.
• Swallowing, chewing, and speech, especially near the end of a meal.
• How rest changes things.
• Tiredness, and what you had to give up or pace.
• Feelings — frustration or worry about being misunderstood.

How Lantern helps

Lantern is a calm space to jot down how your muscles feel across the day in your own words, so the pattern of "better with rest, worse with use" is easy to show. Over time your notes build into a clearer story.

Your clinician may use their own measures to follow the condition — for example the MG-ADL (Myasthenia Gravis Activities of Daily Living), the QMG score, or a quality-of-life questionnaire like MG-QOL15. Lantern lets you note the names of the tools your clinician uses so you can talk about the same things. Lantern does not carry them out, fill them in, or score your muscle strength — that is your clinician's role. Lantern simply helps you bring a clearer account.

A gentle note

Lantern is a companion, not a doctor. It does not diagnose myasthenia gravis, measure your muscles, or tell you what your symptoms mean. If you have sudden trouble breathing or swallowing, this can be serious — seek urgent help or call 999. For other changes, contact your specialist team or GP.