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Palm reading

Simian line: what it means in palm reading

A simian line is a single crease running straight across the palm, where the heart line and head line appear as one. In palm reading folklore it stands for intensity and focus: heart and head working as one.

Palm reading says nothing about health

A single palm crease is not rare: large studies find it in a few people in every hundred, often on one hand only. People sometimes search for it because it’s mentioned in medical contexts. Palm reading can’t tell you anything about health or development, and no line on your hand is a diagnosis. If you have a medical question, about yourself or anyone else, ask a doctor.

How to recognize one

The palm lines that make the simian lineA right palm, fingers up and thumb to the right. The heart line runs across just below the fingers, the head line across the middle of the palm, the life line curves around the base of the thumb, and the fate line rises up the center toward the middle finger.Fate lineLife lineHead lineHeart line
The heart line and head line on a right palm, fingers up. All four lines on one chart

Most palms show two separate horizontal creases in their upper half: the heart line near the fingers and the head line below it. On a palm with a simian line, there’s one deep crease running across instead, from the thumb side to the little-finger edge.

Some hands show a partial version, where the two lines join for part of the way, or where the head line runs right across to the outer edge (palm readers sometimes call that a Sydney line). Hands can differ, too: you might have a simian line on one palm and two lines on the other.

What palm reading folklore says

Traditional palm readers read the simian line as a merging of thought and feeling. People with one, they say, don’t do things by halves: when they care about something, they care completely, and when they focus, the rest of the world falls away.

The same folklore names the shadow side: difficulty separating feelings from facts, all-or-nothing moods, and a stubborn streak. Readers often add that this intensity, used well, makes for unusual determination and loyalty.

None of this is evidence of anything. It’s a set of old images you can try on and keep or discard, like any reading.

On one hand or both

Palm readers pay attention to which hand carries it. On your dominant hand, the one you write with, a simian line is read as an intensity you’ve grown into: focus you’ve chosen and practiced. On the other hand only, it’s read as a temperament you were born with and have learned to soften.

On both hands, the folklore says, the all-or-nothing streak runs right through you: you’ve never been one for half measures, in work or in love.

Reading the rest of the palm with it

Because a simian line stands in for two lines, palm readers lean more on the rest of the hand to fill in the picture. The hand shape colors the intensity: on a water hand it’s read as emotional depth, on an earth hand as practical determination, on an air hand as a mind that won’t let a problem go.

The life line and fate line then add energy and direction, as they would on any palm.

Questions to reflect on

Where in your life do you go all in, and is that serving you right now? When your feelings and your reasoning say different things, which one usually wins? These are the questions the simian line’s folklore points to, whatever your palm shows.

Can the scanner see it?

No. Lanterndeck’s scanner looks for the four main lines separately, so it won’t detect a simian line, and it won’t tell you whether you have one. If your heart and head lines are merged, it may trace one of them, or neither. You can still scan your palm to see your four main lines, and read the heart line and head line pages to compare.

Scan your palm to see your four main lines

The scanner won’t find a simian line, but it will trace your heart, head, life and fate lines on your photo and give you a short reading. Free, and your photo is read once and deleted.

Scan your palm, freeRead the palm lines guide

More palm lines