Have Diarrhea or Have a Diarrhea. Which Is Correct?
We say "have diarrhea" (not "have a diarrhea"). Generally, we don't use the article "a" before names of conditions and diseases.
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Have Diabetes or Have a Diabetes. Which Is Correct?
We say "have diabetes" (not "have a diabetes"). If you're talking about diseases, the indefinite article "a" is usually unnecessary.
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Have Depression or Have a Depression. Which Is Correct?
We say "have depression" (without the article "a"). When we talk about conditions or diseases, the article "a" is almost always unnecessary.
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Have Dementia or Have a Dementia. Which Is Correct?
We say "have dementia". It's incorrect to say "have a dementia". When talking about diseases and conditions, the article "a" is generally unnecessary.
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Have Constipation or Have a Constipation. Which Is Correct?
We say "have constipation". Generally, when you talk about illnesses and conditions, the article "a" is unnecessary.
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Have Conjunctivitis or Have a Conjunctivitis. Which Is Correct?
We say "have conjunctivitis". If you are talking about diseases or conditions, the article "a" is not necessary.
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Is It an NDA or a NDA?
It's an NDA. Since the individual letter N begins with a vowel sound, we use "an" before NDA (Non-Disclosure Agreement).
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Is It an NMN or a NMN?
It's an NMN. Because the first letter of the abbreviation NMN (Nicotinamide Mononucleotide) begins with a vowel sound, it takes the article an (not a).
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Is It an NAD or a NAD?
It's an NAD. Since the first letter of the abbreviation NAD (Nicotinamide Adenine Dinucleotide) begins with a vowel sound, we use the article an (not a).
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