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Health conditions A-Z

Conditions O

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14 Conditions O

Obesity

Symptoms Include:
Weight gain

 

The term ‘obese’ refers to someone who is extremely overweight and has a lot of body fat. Obesity or being overweight can lead to a variety of issues that can have a negative impact on your health. By eating a better diet and increasing your physical activity, you can lower your risk of becoming overweight.

 

Related Conditions:
Obstructive sleep apnoea (OSA)

Obsessive-compulsive disorder (OCD)

Symptoms Include:
Obsessive thoughts | Compulsive behaviours

 

Obsessive-compulsive disorder (OCD) is a mental health issue that affects many people. Obsessive thoughts and compulsive behaviours are symptoms of the disorder. OCD can be distressing and have a substantial impact on a person’s life, but treatment can help them manage it.

 

Related Conditions:
Mental health conditions

Obstructive sleep apnoea (OSA)

Symptoms Include:
Tiredness | Snoring | Poor concentration | Pause in breathing

 

Obstructive sleep apnoea (OSA) is a frequent sleep disorder. During sleep, the walls of the throat relax and thin, causing this condition. This causes you to stop breathing normally. As a result, your sleep may be disrupted on a frequent basis. If you suspect you might have OSA, talk to a doctor about the symptoms listed.

 

Related Conditions:
Snoring | Obesity | Night sweats

Oedema

Symptoms Include:
Swelling | Swollen ankles | Shortness of breath

 

Oedema is a fluid build-up in the body that causes the affected tissue to swell. Depending on the reason, swelling can occur in a specific area of the body or be more widespread. If oedema does not go away on its own, you should consult a doctor.

 

Related Conditions:
Lymphoedema

Oesophageal atresia and Tracheo-oesophageal fistula

Symptoms Include:
Difficulty swallowing | Choking | Difficulty feeding

 

Oesophageal atresia is an uncommon birth abnormality in which the upper oesophagus (the tube that transports food from the mouth to the stomach) does not join the lower oesophagus. This is frequently associated with a Tracheo-oesophageal fistula, which is an improper connection between the oesophagus and the windpipe (trachea).

Oesophageal cancer

Symptoms Include:
Difficulty swallowing | Indigestion | Pain | Weight loss

 

The oesophagus (gullet) – the lengthy tube that delivers food from the throat to the stomach – is affected by oesophagal cancer. If you have any of the symptoms listed below, you should see your doctor. They could be caused by a variety of things, but getting them checked out is a smart idea.

 

Related Conditions:
Cancer

Oral thrush in adults

Symptoms Include:
White patches | Redness | Pain | Sour taste

 

A fungal infection of the mouth is known as oral thrush. Antifungal medication is usually effective in treating it. If you experience symptoms of oral thrush, you should see a doctor.

 

Related Conditions:
Thrush in men | Vaginal thrush

Oral thrush in babies

Symptoms Include:
White patches | Redness | Pain | Difficulty feeding

 

Oral thrush is a fungal illness in the mouth that affects newborns and young children. It’s usually painless and simple to treat. See the section on when to seek medical advice.

Osteoarthritis

Symptoms Include:
Pain | Swelling | Grinding joint

 

Osteoarthritis is a disorder that causes painful and stiff joints. In Northern Ireland, it’s one of the most frequent kinds of arthritis. It can affect anyone, but it is more prevalent in the elderly. If you experience persistent osteoarthritis symptoms, you should consult a doctor.

 

Related Conditions:
Joint pain

Osteomyelitis

Symptoms Include:
Pain | Temperature | Swelling | Redness

 

Osteomyelitis is a painful infection of the bones. If antibiotics are given early on, it usually goes away. If you don’t, you could end up with an irreversible injury. If you or your child are experiencing any of the symptoms listed below, see a doctor.

Osteoporosis

Symptoms Include:
Bones break easily | Bone thinning

 

Osteoporosis causes a decrease in bone density, which makes bones more weak and prone to breaking. It’s a pretty prevalent ailment in older individuals, although it can also strike younger people on occasion. Because oestrogen (a hormone) levels drop after menopause, women are more likely to develop osteoporosis.

Otitis externa

Symptoms Include:
Pain | Discharge | Itch | Hearing loss

 

Otitis externa is a disorder in which the external ear canal becomes inflamed (red and swollen). This tube connects the outer ear to the eardrum. Although there are other reasons, bacterial infection is the most common cause of the illness. Otitis externa is a very frequent condition.

 

Related Conditions:
Earache

Ovarian cancer

Symptoms Include:
Bloating | Tummy ache | Poor appetite | Peeing more

 

Ovarian cancer, often known as ovarian cancer, is a common malignancy in women. It primarily affects women who have gone through menopause (typically over 50), but it can sometimes affect younger women. If you have any of the symptoms listed below, you should see a doctor.

 

Related Conditions:
Cancer

Overactive thyroid (hyperthyroidism)

Symptoms Include:
Feel too warm | Hyperactive | Tiredness | Fatigue | Anxiety

 

The thyroid gland produces too many thyroid hormones in an overactive thyroid. The thyroid gland is located in the front of the neck. Anyone can be affected by an overactive thyroid. It affects more women than men. The number of people affected by the disease rises as they get older.

 

Related Conditions:
Underactive thyroid (hypothyroidism)
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