Greetings.
The picture of the rash on the elbows and the nose suggests a "sun allergy" or PMLE. Kindly see a qualified dermatologist near you fro direct examination .
Also the following measures would help you :
Sunprotection - regular use of sunscreen of at least SPF 30
Full length clothing , using a cap or umbrella ,
Eat food/ citrus fruits rich in
vitamin C
Next Steps
see a qualified dermatologist near you