Quite a long list but don't be frightened by it. 
		Diseases, conditions and health problems are part of life for all of us. 
		Point is be aware.
		
		Conditions that are only hereditary in nature we 
		have called 'Hereditary'.
		Others we have marked 'could be inherited' or 'often inherited' are 
		conditions that may be inherited but can also have other causes.
	  The breed has been designed to work using its eyes 
	  to control stock and its ears to listen for stock it can't see when 
	  working. These are essential qualities the dog needs to perform its tasks 
	  well.
	  When developing this breed by selective breeding these organs have been 
	  made very sensitive and perhaps because of that they are more prone to 
	  problems. Most inherited problems affect the eyes.
	The main eye problems Border Collies suffer from are -
	  CEA - Collie Eye Anomaly - Hereditary - recessive genetic defect 
	  in chromosome 37. Both parents must be carriers.
	  PRA - Progressive Retinal Atrophy (variants) - Hereditary. 
	  Blindness occurs slowly over time, sometimes unseen at first as dogs can 
	  adapt.
	  Cataracts - primary and secondary - could be inherited. 
	  Cloudiness in the lens preventing light reaching the retina. Treatable 
	  with surgery.
	  Glaucoma - often inherited. Caused by internal pressure 
	  on the eye. If untreated damages the optic nerve causing blindness.
	  
	  They can also suffer from these rare conditions. The Border Collie 
	  is not predisposed to them but they can occur.
	  PPM - Persistent Pupillary Membranes. Remnants of strands 
	  of fetal membrane tissue crossing pupil after birth. Rare. Treatable with 
	  surgery.
	  RD - Retinal Dysplasia (variants), Hereditary, viral or 
	  drug induced. Folds or rosettes (round clumps) of the retinal tissue. 
	  Rare.
	  PHTVL/PHPV - Persistent 
	  hyperplastic tunica vasculosa lentis/Persistent hyperplastic primary 
	  vitreous. Fibrovascular plaque on back of  lens.
	  Hearing conditions
	  Adult onset hearing loss - could be inherited. Progressive loss 
	  of hearing with age.
	  Genetic deafness or hearing impairment - Hereditary - 
	  gene mutation associated with coat colour pigmentation (merles)
	  Other issues.
	  Hip Dysplasia - Hereditary. Can also be a result of an accident. 
	  Surgery can rectify most cases but long term weakness is frequent.
	  Epilepsy - could be inherited. Can be controlled with 
	  drugs. usually starts with occasional fits that become more frequent over 
	  time.
	  Neuronal ceroid lipofusicinosis - Hereditary - currently 
	  only affects KC Show lines not working lines. Always fatal within two 
	  years of birth.
	  Trapped neutrophil syndrome - could be inherited - auto 
	  immune condition caused by malfunction of release of white blood cells.
	  Merle issues
	  Breeding two merles together will lead to two copies of the merle 
	  gene being present in the pups resulting in eye, ear and abdominal problems.
	  Colitis -  an inflammation 
	  or irritation of the colon or large intestine. A general name for a 
	  condition with a multitude of causes.
	  Lyme disease - Transmitted by the 
	  bite of ticks. Bacterial infection. Causes joint inflammation, kidney 
	  damage, in some cases nerve damage.
	  Canine Influenza Virus - also 
	  known as Kennel Cough. There are vaccines for this. Get it done at the 
	  same time as the annual Booster
	  Parvovirus - Leptospirosis - Distemper  Hepatitis. 
	  Nasty diseases which should be vaccinated against as a puppy with 
	  subsequent annual boosters. Leptospirosis vaccine is only effective 
	  against the 4 most common variants but these are often found in stagnant 
	  water so worth it.
	  Internal parasites - various 
	  worms, protozoa and even fungal infections in ears. Regular worming deals 
	  with most of these. Lungworms and heartworms require specialised 
	  medication.
	  Checking faeces can indicate the presence of parasites, another good 
	  reason for always picking it up. You can tell a lot from a dogs poo.
	  A yeasty smell around the ears indicates a possible fungal infection
	  External parasites - Flea, ticks, 
	  lice, mites. Regular treatment with a spot on will deal with most of 
	  these. For ticks a stronger version is needed.
	  Mange (sarcoptic (dry) and 
	  demodeptic (wet) and Cheyletiella) - Caused by parasitic mites. See your 
	  vet immediately if you suspect any of these infections and keep your dog 
	  away from contact with other animals. They are caused by three different 
	  species of mite and require specialised diagnosis and treatment and are 
	  highly infectious to other dogs. 
	  Sarcoptic (Scabies) is the most dangerous and is very 
	  irritating to the dog. It will initially show as crusty ear tips and hair 
	  loss on face, ears and elbows. If untreated it spreads over the whole body 
	  with total hair loss and oozing sores. Secondary bacterial or fungal 
	  infections may occur. It is contagious to humans as well. Good reason not 
	  to allow your dog to sleep on your bed.
	  Demodeptic is often present in pups but usually does not 
	  develop. When it does it shows as thin or bald patches on the dogs body 
	  and the dogs skin becomes sore and crusty. hair loos occurs and it spreads 
	  over the dogs body with the risk of secondary infection as with sarcoptic.
	  Cheyletiella is not as serious resulting in flakes of 
	  loose skin appearing in the dogs coat like dandruff.
	  Diabetes - Could be inherited or 
	  could come on as a result of poor health. Reduce the risk of this by 
	  balanced diet and exercise.
	  Hip Dysplasia - Could be 
	  inherited or the result of wear and tear caused by repetitive strain due 
	  to exercises like flyball, agility, frisbee.
	  Cancers - There are a large 
	  range of cancers dogs can be subject to.
	  It is difficult to prevent these as in most types the cause is not 
	  understood.
	  It is likely that a predisposition to many cancers is hereditary but that 
	  does not mean they will develop, it just increases chances.
	  In some circles it is believed that stress is a major contributor to the 
	  development of certain forms of cancer. 
	  Unfortunately it is not easy to spot signs of stress in dogs but 
	  hyperactivity and excessive excitement are indicators.
	  
	  Can you tell the difference between excited and happy and excited 
	  and stressed? 
	  People tend to think that because their dog is excited it is enjoying 
	  itself. 
	  It gets excited when chewing squeaky toys. It gets excited chasing shadows 
	  or lights from torches. It gets excited at flyball and agility events.
	  No it doesn't. It gets hyped up and stressed.
	  It gets excited to see you come home. It gets excited to go out for a 
	  walk. It gets excited when you offer it food.
	  Yes it does. It's happy.
	  Look at the behaviour of dogs in these situations and you'll see how the 
	  excitement differs.
	  Reduce the likelihood of cancers occurring by keeping your dog fit, 
	  keeping its weight within normal parameters for its size, feeding quality 
	  foods (and treats in moderation) and reducing stress by teaching your dog 
	  to be calm and not putting it into stressful situations. 
	  Be vigilant in checking for lumps and bumps and look out for signs of 
	  sensitivity to pressure or in movement. When grooming take the opportunity 
	  to feel all over the dogs body, palpitate bowel areas and manipulate 
	  limbs. Most dogs will happily submit and enjoy the attention.
	  
	  If anything is suspect see your vet and have your dog checked. A physical 
	  examination and perhaps some blood tests will alleviate worries or catch 
	  something in time to be treated.
	  Dogs suffer pain but until it 
	  becomes serious they do so without showing it. Spotting initial pain or 
	  discomfort is not so easy but, again, if vigilant you can save your dog a 
	  lot of suffering and discomfort. If its in a limb it is more obvious 
	  because the dog will favour the limb but internally it is often invisible.
	  
	  Signs of long term internal pain in a dog can be manifested around its 
	  eyes. They become dull and lose their brightness. A dog may also start 
	  licking an area where the pain is strongest. Again be vigilant, take 
	  opportunities to handle the dog and feel for sensitive areas - carefully.
	  Dogs, including Border Collies, can also 
	  suffer from a number of other diseases and conditions - Just like us 
	  humans.
	  Allergic reactions to foods, substances and parasites -
	  Anal Gland infections - Arthritis -
	  Bladder stones - Bronchial and chest 
	  infections - 
	  Bowel infections (watch what they scoff when out walking 
	  or from bins) - Cysts - Depression -
	  Dislocation of limbs or joints - Fractures
	  and broken limbs - Heatstroke - Herpes 
	  - Hypoglycemia - Hypothyroidism -
	  Incontinence - Insect bites - 
	  Kidney, Liver or Pancreatic diseases - Laryngitis 
	  - Leukemia - Motion Sickness - 
	  Obesity - Rabies - Rheumatism -
	  Genital and urinary tract infections - Ulcers.
	  This is not a definitive list.