Fingernail Ridges, and the Meaning of Spots and Lines

fingernail ridges

The Fingernail Ridges Spots and Lines

The fingernail acts primarily as protection of the sensitive fingertip, and with its delicate growth process, the nails are responsive to physiological and physical changes. However, with their delicate growth process, the nails are responsive to changes in the psyche or physical health. Fingernail ridges or other marks can give clues about what’s going on with the body.

When checking health issues from fingernails, we look at the colour of the nail as well as the nail bed, the texture, shape and the moons. These findings represent current or past events, not the future. In some cases, it is problematic to make a judgement due to the popularity of artificial nails. Frequent use of nail varnish and associated products on the nails can also give misleading information for the health of the individual.

I would like to point out that, to back up any possible health issues acquired from palmistry, you should always consult a qualified medical practitioner. Don’t make the mistake of diagnosing from nails, palms or lines alone, because many of these indicators continually change according to the individuals.

The moons on the fingernail

The moons are a part of the growing root of the nail, more commonly seen on the thumbs and rarely on the little finger. Ideally, they should be just slightly visible and pale in colour. No moons at all may suggest a weak constitution, and over-large moons can denote an overactive thyroid.


Fingernail ridges can form if there is something unusual going on. When looking for clues to the health using the nails, we apply the same principles as for the hands, which is to find something unusual. We also look at the quality. Keep in mind, these are possible meanings.

Horizontal ridges (grooves) on all the nails can suggest a change or interruptions in the individual’s health possibly due to severe dieting, long-term stress, acute infections, injury or trauma. These grooves are less common compared to the vertical ones.

Vertical grooves can occur with old age, but they can show a delicate constitution, nervousness, stress, hormonal changes, or poor nutrition in a young person. If all the nails have ridges, it could also be due to rheumatoid arthritis or overuse of nail polish removers.

black lines on the fingernails. white spots on nails.


White spots can show a vulnerable nervous system and can appear during times of stress or when the body is lacking in a certain mineral such as calcium. An injury to the nail can also cause a white spot. Fine black or red lines, is mainly caused by damaged small blood vessels underneath your nail. However, in small cases, it can be a sign of a condition affecting the heart or blood, such as endocarditis.


The cause of flaky nails can be a mineral imbalance, poor diet or an underactive thyroid gland. Using bare hands for work such as gardening and overuse of chemicals on the nails can also cause brittle and weak nails. Long-term stress shows as dry skin on the palms, which would also affect the nail.

Red looking nails

The nailbed that’s red mainly points to someone with intense passion or extra strength. Very red nails can be due to high blood pressure, bad temper or cardiovascular disease. Look at the colour of the palms to see if they too are red. If so, the subject may be doing everything in excess, mentally or physically.


The humped nail is commonly associated with weak lungs, respiratory disorders such as emphysema, bronchitis or pneumonia. Long-term smokers often have nails that grow over the tip of the finger, appearing curved or humped (suggesting inadequate oxygenation).

A severely humped nail, where the tip appears swollen, indicates a more severe condition. A claw-like nail is frequent in the hands of older people who may have a problematic or dominant attitude. If there are no respiratory or age-related issues, these people are tenacious, but with a pompous attitude.


The concave nail is opposite of the humped nail and appears dished and sunken in, like a spoon. It can be a sign of a lack of energy or physical stress. There may be nutritional deficiencies or exposure to a lot of chemicals that soften the nail. The concave nail can be a warning of a more severe oncoming illness.


A nail usually takes six months to grow from the root to the tip, subsequently, some markings can be timed based on where it is on the nail. As an example, a horizontal ridge halfway along the nail would suggest a change around three months ago.

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