Not sure about worms, but it is a sign of fleas.
Malnutrition/weight loss.
i dont know what it is
Yes, cats do like cat food.
It is a chemical in most products that creates bubbles. Its cheap It is theorised to cause cancer, irritation and hair loss. There is no current evidence of it causing cancer. It may irritate skin in few cases. It might cause scalp irritation and slight hair loss if used in CONCENTRATED AMOUNTS (not enough in shampoos and conditioners)
Yes!
No it can't. Frontline is a pesticide that is useful against fleas, ticks, and other parasites. It is applied topically and is recommended for cats and other animals. Follow manufacturers directions. Then, observe your cat for a day or two. It might suffer a temporary irritation. If this irritation persists, have a vet examine the cat.
at first, yes. Then, the cat will eat less and less because the tapeworm has filled it's belly so much.
no cats do not shed they can loose air wen the hair gets to long. if cats ave loss of hair,food, couguing your cat may have harthioritas an extremely rare disease tat will kill your cat so if it appens see te vet 24/7
Common side effects for hair loss treatment are irritation of the scalp, dryness and flaky skin. There are alternate methods of hair treatment that cause no side effects at all. http://www.medicinenet.com/hair_loss/article.htm
Fleas themselves do not cause hair-loss. Rather, if the cat is infested, its continued scratching is the most likely culprit. If the hair-loss is extreme, however, another cause might be sarcoptic mange. In addition, there are several dermatological afflictions that can cause hair loss. Your veterinarian can tell you if your pet is simply flea-bitten or suffering from a more serious condition.
Signs of pesticide sensitivity in cats can vary depending on the specific cat. Symptoms may include hair loss, vomiting, lethargy, inappetence, or seizures.
It could be a number of things but most obvious sounds like some sort of skin irritation. Possibly fleas (should be easy to spot), some cats can be allergic to fleas which makes the infestation and itching worse. Or possibly mites such as Notoedres cati or Cheyletiella. It could also possibly be lice (you would usually be able see these if you look closely). Take your cat to the vets - they can do skin scrapings to find the cause (if it is a skin problem). Or advise you if there are any underlying conditions causing the skin irritation.