Hello and welcome to HCM
Smokind definitely is a very strong risk factor for not only lung diseases but also cardiovascular diseases.
Lung diseases include chronic obstructive diseases, restrictive lung diseases and lung cancer
The tightness of chest could be due to lung or heart pathology.
You should visit your physician and get an ECG and X-ray chest done.
The spots on the skin are unlikely to be due to fungal infection
as they are not responding to anti-fungal cream.
It seems to be some skin problem.
You should visit your physician or dermatologist
for proper diagnosis and correct treatment.
Thank you and take care
Dr Shailja P Wahal