Question

What is a disease? What are the different reasons for occurrence of diseases? short answer
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Answer 1

Answer:

A disease may be caused by external factors such as pathogens or by internal dysfunctions. For example, internal dysfunctions of the immune system can produce a variety of different diseases, including various forms of immunodeficiency, hypersensitivity, allergies and autoimmune disorders.

Answer 2

ᴀɴꜱᴡᴇʀ :

⟶ ᴀ ᴅɪꜱᴇᴀꜱᴇ ɪꜱ ᴀ ᴘᴀʀᴛɪᴄᴜʟᴀʀ ᴀʙɴᴏʀᴍᴀʟ ᴄᴏɴᴅɪᴛɪᴏɴ ᴛʜᴀᴛ ɴᴇɢᴀᴛɪᴠᴇʟʏ ᴀꜰꜰᴇᴄᴛꜱ ᴛʜᴇ ꜱᴛʀᴜᴄᴛᴜʀᴇ ᴏʀ ꜰᴜɴᴄᴛɪᴏɴ ᴏꜰ ᴀʟʟ ᴏʀ ᴘᴀʀᴛ ᴏꜰ ᴀɴ ᴏʀɢᴀɴɪꜱᴍ, ᴀɴᴅ ᴛʜᴀᴛ ɪꜱ ɴᴏᴛ ᴅᴜᴇ ᴛᴏ ᴀɴʏ ɪᴍᴍᴇᴅɪᴀᴛᴇ ᴇxᴛᴇʀɴᴀʟ ɪɴᴊᴜʀʏ.

ᴅɪꜱᴇᴀꜱᴇꜱ ᴀʀᴇ ᴏꜰᴛᴇɴ ᴋɴᴏᴡɴ ᴛᴏ ʙᴇ ᴍᴇᴅɪᴄᴀʟ ᴄᴏɴᴅɪᴛɪᴏɴꜱ ᴛʜᴀᴛ ᴀʀᴇ ᴀꜱꜱᴏᴄɪᴀᴛᴇᴅ ᴡɪᴛʜ ꜱᴘᴇᴄɪꜰɪᴄ ꜱɪɢɴꜱ ᴀɴᴅ ꜱʏᴍᴘᴛᴏᴍꜱ. ᴀ ᴅɪꜱᴇᴀꜱᴇ ᴍᴀʏ ʙᴇ ᴄᴀᴜꜱᴇᴅ ʙʏ ᴇxᴛᴇʀɴᴀʟ ꜰᴀᴄᴛᴏʀꜱ ꜱᴜᴄʜ ᴀꜱ ᴘᴀᴛʜᴏɢᴇɴꜱ ᴏʀ ʙʏ ɪɴᴛᴇʀɴᴀʟ ᴅʏꜱꜰᴜɴᴄᴛɪᴏɴꜱ.

ꜰᴏʀ ᴇxᴀᴍᴘʟᴇ, ɪɴᴛᴇʀɴᴀʟ ᴅʏꜱꜰᴜɴᴄᴛɪᴏɴꜱ ᴏꜰ ᴛʜᴇ ɪᴍᴍᴜɴᴇ ꜱʏꜱᴛᴇᴍ ᴄᴀɴ ᴘʀᴏᴅᴜᴄᴇ ᴀ ᴠᴀʀɪᴇᴛʏ ᴏꜰ ᴅɪꜰꜰᴇʀᴇɴᴛ ᴅɪꜱᴇᴀꜱᴇꜱ, ɪɴᴄʟᴜᴅɪɴɢ ᴠᴀʀɪᴏᴜꜱ ꜰᴏʀᴍꜱ ᴏꜰ ɪᴍᴍᴜɴᴏᴅᴇꜰɪᴄɪᴇɴᴄʏ, ʜʏᴘᴇʀꜱᴇɴꜱɪᴛɪᴠɪᴛʏ, ᴀʟʟᴇʀɢɪᴇꜱ ᴀɴᴅ ᴀᴜᴛᴏɪᴍᴍᴜɴᴇ ᴅɪꜱᴏʀᴅᴇʀꜱ.

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