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26 Conditions L

Lactose intolerance

Symptoms Include:
Flatulence | Diarrhoea | Bloating | Tummy ache

 

Lactose intolerance is a digestive disorder in which the body cannot digest lactose. This is a sugar found primarily in milk and dairy products. Lactose intolerance can strike anyone at any time. If you think you have symptoms of the disease, see a doctor.

Laryngeal (larynx) cancer

Symptoms Include:
Hoarseness | Difficulty swallowing | Sore throat | Cough

 

A kind of cancer that affects the larynx (voice box) is known as laryngeal cancer. If you’ve had any of the main symptoms for more than three weeks, consult a doctor. Other disorders can produce the same symptoms, so it’s a good idea to have them looked out for.

 

Related Conditions:
Cancer

Laryngitis

Symptoms Include:
Hoarseness | Problems speaking | Sore throat | Temperature

 

The inflammation (swelling) of your vocal box is known as laryngitis (the larynx). Infection or injury to the larynx is the most common cause. It usually improves on its own in one to two weeks without therapy. If your symptoms are severe or haven’t improved after two weeks, see your doctor.

 

Related Conditions:
Sore throat | Common cold | Flu | Tonsillitis | Swollen glands

Learning disabilities

Symptoms Include:
Learning disability

 

A learning disability impairs a person’s capacity to learn new things during the course of their life. Learn about the effects of a learning disability and where you may get help.

Leg cramps

Symptoms Include:
Cramps

 

Leg cramps are a common but typically innocuous ailment. Cramps occur when the muscles in your leg become tight and painful all of a sudden. The calf muscles are the most commonly affected, but they can affect any area of your leg, including your foot and thighs.

Leptospirosis (Weil’s disease)

Symptoms Include:
Temperature | Headache | Muscle ache | Nausea

 

Leptospirosis, often known as Weil’s sickness, is a disease spread by animals. It’s uncommon in the United Kingdom. If you suspect you’ve come into touch with an infected animal’s pee and are experiencing leptospirosis symptoms, see your doctor (see the section on symptoms).

Leukaemia (acute lymphoblastic)

Symptoms Include:
Pale | Tiredness | Can’t fight infections | Temperature

 

Acute lymphoblastic leukaemia (ALL) is a malignancy of the white blood cells. It spreads quickly and aggressively, necessitating early treatment. Adults and children alike may be affected.

 

Related Conditions:
Cancer

Lichen planus

Symptoms Include:
Skin lesions | White patches | Itch | Abnormal nails

 

Lichen planus is a non-infectious rash that can appear anywhere on your body, even inside your mouth. If you suspect you have it, you should see your doctor.

 

Related Conditions:
Penis problems

Lichen Sclerosus

Symptoms Include:
Skin lesions | Itch | Pain | Painful sex

Lichen Sclerosus is a chronic skin disorder that primarily affects the vaginal area. Itching and white spots are common symptoms. It is most frequent in women who have gone through menopause, although it can also affect men and children. Although there is presently no cure, symptoms can usually be managed with medicine.

Limp in a child

Symptoms Include:
Limp

 

A limping youngster is usually the result of a small injury, such as a sprain or splinter. However, if there’s no evident cause, consult your doctor because there could be a dangerous underlying medical disease.

Lipoedema

Symptoms Include:
Lipoedema

 

Lipoedema is a long-term disorder in which fat cells accumulate abnormally in the legs, thighs, and buttocks, as well as the arms. Lipoedema mostly affects women, however, it can also affect men in rare situations. If you’re experiencing lipoedema symptoms, visit a doctor.

Lipoma

Symptoms Include:
Lump | Lumps

 

Lipomas are fatty lumps that form beneath the skin. They’re normally safe and don’t require any treatment.

Listeriosis

Listeriosis is an uncommon bacterial ailment caused by listeria. It normally goes away on its own, but for some people it might create major difficulties.

Liver cancer

Symptoms Include:
Jaundice | Itch | Weight loss | Tiredness

 

Cancer that starts in the liver is a rare but deadly form of cancer. This is distinct from liver cancer that develops elsewhere in the body and then spreads to the liver (not covered on this page). If you detect any of the symptoms listed, consult a doctor.

 

Related Conditions:
Cancer

Liver disease

Symptoms Include:
Liver disease

 

More than one hundred different forms of liver disease exist. This article contains information about the liver’s function as well as certain specific types of liver disease.

Long Covid

Symptoms Include:
Cough | Fatigue | Shortness of breath | Joint pain | Loss of smell or taste | Depression | Anxiety

 

Coronavirus (COVID-19) can leave some people with symptoms that continue for weeks or months after the infection has passed. This is also known as “extended COVID” or “post-COVID-19 syndrome.”

Loss of libido

Symptoms Include:
Low sex drive

 

Libido loss (sex drive loss) is a typical ailment that many men and women have at some time in their lives. It’s frequently associated with marital problems, stress, or exhaustion, but it might also indicate an underlying medical problem, such as low hormone levels.

Lost or changed sense of smell

Symptoms Include:
Reduced sense of smell

 

A change in your sense of smell can be unpleasant and have an impact on the way food tastes. However, it is usually not dangerous and will improve in a few weeks or months. If your sense of smell does not return to normal in a few weeks, see your doctor.

 

Related Conditions:
Covid-19

Low blood pressure (hypotension)

Symptoms Include:
Dizziness | Fainting | Fast heartbeat | Blurred vision

 

When your blood pressure in your arteries is abnormally low, it’s called low blood pressure or hypotension. Low blood pressure that occurs naturally is unlikely to cause any symptoms and is usually unnoticed.

Low blood sugar (hypoglycaemia)

Symptoms Include:
Hunger | Sweating | Tremors | Dizziness

 

Low blood sugar, often known as hypoglycemia or “hypo,” occurs when the amount of sugar (glucose) in your blood falls too low. It primarily affects diabetics, especially those who use insulin.

Lower leg pain

Symptoms Include:
Pain | Swelling

 

Lower leg pain can be caused by conditions ranging from torn tendons to diabetic neuropathy.

Lower back pain

Symptoms Include:
Pain | Swelling

 

Lower back pain is one of the most common health issues worldwide. It affects more than 80% of adults at some point in their lives, making it a common reason for people to visit the doctor.

Low sperm count

Symptoms Include:
Low fertility

 

A low sperm count occurs when a man’s sperm count is less than 15 million per millilitre of sperm. Low sperm counts might make it more difficult to conceive naturally, although successful pregnancies are still possible.

Lumps and swellings

Symptoms Include:
Lumps | Swelling

 

The majority of lumps and swellings beneath the skin are innocuous and can be ignored. However, if you acquire a new lump or swelling, consult your doctor to determine the cause.

Lung cancer

Symptoms Include:
Cough | Blood | Pain | Shortness of breath

 

Lung cancer is a kind of cancer that is both common and deadly. Lung cancer is the fourth most prevalent cancer in men and the third most common cancer in women in the UK. If you have any of the symptoms listed below, you should see your doctor.

 

Related Conditions:
Cancer

Lupus

Symptoms Include:
Rash | Tiredness | Fatigue | Joint pain | Glands up

 

Lupus is a long-term illness known as systemic lupus erythematosus (SLE). Inflammation of the joints, skin and other organs is caused by it. Although there is no cure, early therapy can help to alleviate symptoms.

Lyme disease

Symptoms Include:
Rash | Fatigue | Tiredness | Muscle pain | Joint pain

 

Lyme disease is a bacterial infection transmitted to humans by ticks carrying the pathogen. Ticks are little spider-like insects that live in wooded and heath environments. They eat the blood of birds and mammals, including people, to survive. If Lyme disease is caught early enough, it may usually be treated successfully.

 

Related Conditions:
Tick-borne diseases

Lymphoedema

Symptoms Include:
Swelling

 

Lymphoedema is a long-term (chronic) disorder in which the body’s tissues swell. It can affect any area of the body, although it most commonly affects the arms and legs. If you have signs of lymphoedema, such as swelling in your arms and legs, consult your doctor (see symptoms section below).

 

Related Conditions:
Oedema
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