The coughing spell you have described sounds a lot like you have had a recurrent cold for a long time. This is sometimes the most uncomfortable thing, as it leaves behind a nagging cough which then refuses to go away, no matter how much you try. There is no particular solution which will work for this kind of a cough. In fact, you would be better off trying a permutation and combination of various things and see what works for you. Sometimes, the "crumb" you are describing can also be a small boil that may have developed. This could also be a slight rash. This is not an uncommon feature. A lot of times, people can develop a rash when they cough too much and apply excessive pressure in the same spot. This happens without realization and the only way to heal this is to stop the coughing. In order to do so, one of the best remedial measures available is to try and find things that can soothe the throat. One of the best things for this is licorice. If possible, buy licorice twigs and chew on them. They will let off a sweet juice and it is this juice which will help to soothe the throat considerably. However, if you have a dry cough, try to use this only at night. Licorice may have the additional property of drying out the throat further.
Another really good remedial measure is to squeeze out a tablespoon of ginger juice and add a tablespoon of honey to this. This should be had little by little all day. It will make a significant difference and improve the condition of your throat. It is also a good idea to keep sipping from a glass of comfortably hot water to which a quarter teaspoon of turmeric powder has been added. This will help with healing, as turmeric powder is rich in healing properties. It is an antibiotic and antiseptic, and one of the most powerful ones available in natural form. Having pepper tea just before you are going to bed will also work well to heal all night. Pepper is particularly helpful with helping to provide relief to a sore throat. It is also about the only spice that does not sting and make you feel uncomfortable. Try not to have any oily food while you still have the cough. This will do nothing but aggravate it further.
answered by M W