I'm a 18 year old guy I have a 4 inch penis I don't understand why I'm the only guy who has a small penis while the rest of the guys have long penis (6 to 8 inches) also my fingers and toes are a smaller than my friends like wherever I go I see men with huge hands fingers and toes my legs are size 10 (that is okay) but my toes and fingers are like a girl even in my classroom there are girls who have bigger hands and toes than me my height is 5 ft11 (is there a possibility I can grow more) also I somehow think my voice hasn't changed yet also my body hair is growing and so as the pubic but I have allot of hair loss I don't knw why it happens as when I was a kid I had allot of hair and when I grew Older I started to lose all my hair like that and there are none in my family who suffer any kind of hair loss or late puberty my weight is 90 kg and I seem to question myself have I reached my full puberty yet or I will grow more till 20 or 21 please help if any treatment needed do tell.