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What is leprosy

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leprosy

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WHO leprosy fact sheet Hansen disease cause symptoms treatment

Leprosy, also called Hansen disease, is a chronic bacterial infection caused mainly by Mycobacterium leprae. It primarily affects the skin and peripheral nerves, and may also affect the eyes and lining of the nose.
Typical features include:
  • Light, red, or darker skin patches with reduced sensation to touch, pain, or temperature
  • Numbness, tingling, or weakness in hands and feet
  • Enlarged or painful peripheral nerves
  • If untreated, repeated unnoticed injuries can lead to ulcers, deformity, and disability
It spreads only with prolonged close exposure to an untreated person and is not easily transmitted through ordinary casual contact. It can take years, sometimes up to 20 years, for symptoms to appear.
Leprosy is curable. Standard treatment is multidrug therapy, usually rifampicin, dapsone, and clofazimine. Early diagnosis and treatment prevent nerve damage and disability. The WHO leprosy overview and CDC information page emphasize that people receiving treatment can continue normal family, school, and work life.
A recent systematic review of leprosy immunopathogenesis is indexed as PMID 39308868.

What are the early warning signs of leprosy?

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leprosy AND diagnosis

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CDC leprosy early signs symptoms numb skin patches enlarged nerves

Early warning signs of leprosy often involve a skin change plus altered feeling in that area:
  • A pale, lighter, reddish, or copper-colored patch on the skin
  • Reduced or absent sensation in the patch, especially for light touch, pain, or heat
  • Numbness, tingling, or reduced feeling in the hands or feet
  • Thickened, tender, or enlarged peripheral nerves
  • Weakness of fingers, hands, feet, toes, or eyelids
  • Painless burns, cuts, blisters, or wounds, especially on numb hands or feet
  • Dry skin or loss of hair/sweating over a patch
A skin patch in leprosy is often not itchy or painful. The key early sign is a patch with definite sensory loss. Medical texts and the WHO diagnostic criteria identify either this finding, or an enlarged nerve with sensory loss or muscle weakness, as major signs.
These symptoms can have many other causes, but anyone with an unexplained numb skin patch or new weakness should be assessed promptly at a clinic. Leprosy is curable, and early treatment helps prevent permanent nerve damage.

What are the effective medicine for headchae

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tension-type headache AND analgesics

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NHS headache paracetamol ibuprofen emergency warning signs

For an occasional mild headache in an adult, common effective options are:
  • Paracetamol (acetaminophen): often a good first choice. Follow the dose and maximum daily amount on your local product label. Avoid exceeding the limit, especially if you have liver disease or drink a lot of alcohol.
  • Ibuprofen: can work well, especially if the headache is linked to muscle tension, cold/flu, or menstrual pain. Take it with food. Avoid it if you have a stomach ulcer or bleeding history, kidney disease, are on blood thinners, or are pregnant unless a clinician advises it.
  • Aspirin: may help some adults, but do not give it to anyone under 16 years old because of the risk of Reye syndrome.
For simple tension-type headaches, acetaminophen or anti-inflammatory medicines such as ibuprofen are standard options. Using pain medicines more than about 3 days per week can itself lead to medication-overuse headaches.
Try water, a meal if you have skipped one, rest, limiting screens, and relaxation as well. The NHS self-care guidance lists paracetamol or ibuprofen as options for many ordinary headaches.
Get emergency help now if the headache is sudden and extremely severe, occurs after a head injury, or comes with weakness/numbness, confusion, fainting, seizure, vision or speech changes, stiff neck with fever, or persistent vomiting. Seek a clinician's advice if headaches are new, frequent, worsening, or not improving with usual treatment.

Type of leprosy

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leprosy classification

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WHO leprosy classification paucibacillary multibacillary Ridley Jopling types

Leprosy can be classified in two main ways:

1. WHO treatment classification

  • Paucibacillary (PB) leprosy: 1 to 5 skin lesions, usually with few bacteria. It broadly includes tuberculoid and borderline-tuberculoid forms.
  • Multibacillary (MB) leprosy: more than 5 skin lesions or bacteria detected on a skin smear. It broadly includes mid-borderline, borderline-lepromatous, and lepromatous forms.
This simpler system guides treatment. See the WHO classification.

2. Ridley-Jopling clinical classification

This spectrum reflects the person's immune response to Mycobacterium leprae:
  1. Tuberculoid leprosy (TT)
    Few, well-defined skin patches; marked loss of sensation; few bacteria; strong immune response.
  2. Borderline tuberculoid (BT)
    Similar to tuberculoid disease but with more lesions and variable nerve involvement.
  3. Mid-borderline or borderline-borderline (BB)
    Features lie between the tuberculoid and lepromatous ends of the spectrum.
  4. Borderline lepromatous (BL)
    Numerous, more symmetrical skin lesions; bacterial numbers are higher; nerve involvement may be widespread.
  5. Lepromatous leprosy (LL)
    Many widespread and symmetrical lesions, nodules, and more extensive bacterial infection; weak cell-mediated immune response.
Other clinical forms sometimes mentioned are:
  • Indeterminate leprosy: an early, limited form with one or a few vague patches.
  • Pure neuritic leprosy: mainly affects peripheral nerves, with little or no obvious skin lesion.
PB and MB are the practical categories used for treatment, while the Ridley-Jopling system gives more clinical and immunological detail.
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