how old is that pic?
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He looks like a nice guy except his smile does a weird thing where the corners turn down. Reveals some nasty inner turmoil I'm sure. not sure about type, sorry.
something in his eyes reminds me of my autistic nephew. come to think of it his whole expression kinda looks like when they try to force my nephew to smile for pictures. Usually it doesn't work, but when it does his mouth does that same smile/not smile thing.
Seems to be a logical senser. My first guess would be SLE.
SLE. or LSI. Hard to tell. You can tell he has a onesided smile lurking.