Health Conditions

Mumps

Mumps is a contagious viral infection that used to be common in children before the introduction of the MMR vaccine.

Munchausen’s syndrome

Munchausen's syndrome is a psychological disorder where someone pretends to be ill ordeliberately producessymptoms of illness in themselves.

Munchausen's syndrome by proxy

Fabricated or induced illness (FII) is a rare form of child abuse. It occurs when a parent or carer, usually the child's biological mother, exaggerates or deliberately causes sympt…

Muscular dystrophy

The muscular dystrophies (MD) are a group of inherited genetic conditions that gradually cause the muscles to weaken, leading to an increasing level of disability.

Myalgic encephalomyelitis

Chronic fatigue syndrome (CFS) causes persistent fatigue (exhaustion) that affects everyday life and doesn't go away with sleep or rest.

Myasthenia gravis

Myasthenia gravis is a rare long-term condition that causes certain muscles to become weak.

Myelodysplastic syndrome (myelodysplasia)

Myelodysplastic syndrome (MDS)is a blood disorder that causes adrop in your number of healthy blood cells.

Myocardial infarction

Myocardial infarction (heart attack) is a serious medical emergency in which the supply of blood to the heart is suddenly blocked, usually by a blood clot.

Nail patella syndrome

Nail patella syndrome is a rare genetic condition that can cause problems with the nails, bones, kidneys and eyes. It's thought to affect at least1 in 50,000 people.

Narcolepsy

Narcolepsy is a rare long-term brain disorder that causesa person to suddenly fall asleep at inappropriate times.

Nasal congestion

Catarrh is a build-up of mucus in an airway or cavity of the body.

Nasal polyps

Nasal polyps are swellings of the normal nasal lining that occur inside the nasal passages and sinuses (air-filled spaces behind the nose, eyes and cheeks).

Nasopharyngeal cancer

Nasopharyngeal cancer isa rare type of cancer that affects the part of the throat connecting the back of the nose to the back of the mouth (the pharynx) .

Necrotising fasciitis

Necrotising fasciitis is a rare but serious bacterial infection that affects the tissue beneath the skin, and surrounding muscles and organs (fascia).

Neonatal herpes (herpes in a newborn baby)

Neonatal herpes is a herpes infection in anewborn baby. It's caused by the herpes simplex virus, a highly contagious virus that can cause coldsores and genital ulcers in adults.

Nephrotic syndrome in children

Nephrotic syndrome is a conditionthat causes the kidneys to leak large amounts of protein into the urine.This canlead toa range of problems, including swelling of body tissues and…

Neuroblastoma

Neuroblastoma is a rare type of cancer that mostly affects babies and young children.

Neuroendocrine tumours

Neuroendocrine tumours (NETs)are rare tumours that can occur in the cells of the neuroendocrine system.

Neurofibromatosis type 1

Neurofibromatosis is the general name for a number of genetic conditions that cause tumours to grow along your nerves.

Neurofibromatosis type 2

Neurofibromatosis is the general name for a number of genetic conditions that cause tumours to grow along your nerves.

Neuromyelitis optica

Neuromyelitis optica (NMO), also known as Devic's disease, is a rare neurological condition.

Night sweats

People who suffer night sweats will typically wake in the night to find their bedclothes and bedding drenched, even if their bedroom temperature is cool. This abnormal sweating is…

Nightmares

Many children experience nightmares and night terrors, but most grow out of them. They don't cause any long-term psychological harm to your child.

Nipple discharge

Nipple discharge can be caused by a wide range of conditions, most of which are harmless or easily treated.